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35results about How to "Pressing feels good" patented technology

Plane type key structure

The invention relates to a plane type key structure used in an electronic device comprising a circuit board. The plane type key structure comprises a plane key board, an elastic material layer and a metal elastic piece layer, wherein the plane key board comprises a first key and a second key which are adjacently arranged; the elastic material layer is connected below the plane key board, and the upper surface of the elastic material layer connected with the plane key board is provided with a first groove which is arranged between the first key and the second key and used for obstructing the press linkage effect of the first key and the second key; the metal elastic piece layer is connected below the elastic material layer and arranged on the circuit board; and a first metal elastic piece and a second metal elastic piece which respectively correspond to the first key and the second key are arranged on the metal elastic piece layer.
Owner:INVENTEC CORP

Input device capable of improving contact sensitivity

InactiveCN102376483ASensitive pressing strokePressing feels goodElectric switchesEngineeringContact sensitivity
The invention relates to an input device capable of improving contact sensitivity, which comprises a plurality of key units, a circuit board and a plurality of pressed units corresponding to the key units, wherein each key unit comprises a soft key cap and a hard pressed block formed at the bottom of the soft key cap; the circuit board comprises a plurality of conductive contact assemblies; each conductive contact assembly is provided with a first polar zone and a second polar zone; each pressed unit comprises a positioning diaphragm and a conductive shrapnel positioned between the positioning diaphragm and the circuit board; when each key unit is loosened, the conductive shrapnel is only in contact with the first polar zone; and when each key unit is pressed, the pressed salient point of each hard pressed block is pressed downwards to enable the conductive shrapnel to be deformed to conduct the first polar zone and the second polar zone, thus the pressing stroke sensitivity and the pressing hand feeling are improved by each hard pressed block and the conductive shrapnel.
Owner:ASIA OPTICAL CO INC

Buckle assembly type mahjong machine control disk

The invention belongs to the technical field of machinery, relates to a buckle assembly type mahjong machine control disk, and resolves technical problems of existing unreasonable designs and the like. The buckle assembly type mahjong machine control disk comprises a disk body, an accommodation chamber for placing a dice is arranged at the center of the disk body, a seal cover made of transparent materials is fixed at a position of an opening of the accommodation chamber, a plurality of button holes located on the periphery of the accommodation chamber are arranged on the disk body, a button is mounted in each button hole, the seal cover is fixed at a position of the opening of the accommodation chamber through a pressing ring with a pressing edge arranged at the upper end of the pressing ring, and a buckle type limiting structure capable of blocking the pressing ring to continue rotating when the pressing ring clockwise or anticlockwise rotates is arranged between the pressing ring and the opening of the accommodation chamber. The buckle assembly type mahjong machine control disk has the advantages of being reasonable in design, simple in structure, easy to assemble, and high in structure strength; a membrane isn't separated from a panel even if the disk is used for a long time or the temperature changes in a wide range, and the service life is long; and the buttons are ergonomically designed, good in pressure touch, not easy to abrade, and easy to process and manufacture.
Owner:ZHE JIANG FENG SHANG TECHONOLOGY CO LTD

Suction assembly for endoscope and endoscope

The invention discloses a suction assembly for endoscope and an endoscope. The suction assembly comprises a button assembly and a suction cavity, and a negative pressure connector and a suction connector are arranged on the suction cavity; the button assembly comprises a valve element reset through a spring, and the valve element is in sliding fit with the suction cavity so that the negative pressure connector and the suction connector can be connected or disconnected. The button assembly further comprises a shell, a valve rod and a sealing piece are arranged in the shell, and the valve rod and the sealing piece form a valve element. The tail end of the valve rod is connected with a spring, and a direct-current electromagnet assembly forming magnetic coupling with the valve rod is furtherarranged in the shell. The direct-current electromagnet assembly and the spring are used for driving the valve element to move in the opposite directions. And the upper end of the shell is provided with a key switch assembly for connecting the direct-current electromagnet assembly with a direct-current power supply. Endoscope comprises said suction assembly. The beneficial effects are that the suction assembly is simple in structure, convenient to operate, reliable in function, good in pressing hand feeling and multiple in selectable structural forms; endoscope has the same effect as previously described.
Owner:重庆金山医疗技术研究院有限公司

Dustproof and sound-making optical axis keyboard key and keyboard

InactiveCN107424859AAvoid enteringPrevent the impact of pressingElectric switchesKey pressingOptical axis
The present invention relates to the field of keyboard technology, and particularly to a dustproof and sound-making optical axis keyboard key, which comprises an upper cover, a lower cover, a first spring, a second spring, a light blocking sheet, an elastic sheet and a light emitting module. The upper cover and the lower cover are in sleeve-embedded connection. The side wall of the lower cover is provided with a sliding groove, and the side wall of the upper cover is provided with a position limiting protrusion block. The elastic sheet is mounted on the side wall of the lower cover. The lower end of the light blocking sheet is provided with a pair of tubes. The light-emitting module is arranged at the lower end of the light blocking sheet. The light blocking sheet is provided with an optical channel. The front wall of the lower cover is provided with a light passing hole. According to the invention, the upper cover and the lower cover are used by cooperation of the sliding groove and the position limiting protrusion block, and are internally provided with two springs. This means that when the keyboard key is pressed, a good pressing feel can be generated and a sound is produced. After the key is pressed, it can restore to its original position quickly, and the service life of the key is longer. The upper cover of the keyboard key is integrally formed and prevents the dust from entering the key. In addition, with a simple structure and the reasonable design, the assembling of the keyboard and the key is simple, which can improve the production efficiency greatly.
Owner:乐清市工义电子有限公司

Overlay structure, method for manufacturing same and input device

The invention discloses an overlay structure which comprises a bottom coating layer, a top coating layer and a thermoplastic material layer. The thermoplastic material layer is overlapped between the bottom coating layer and the top coating layer. The thermoplastic material layer comprises first thermoplastic material layer portions and second thermoplastic material layer portions which are connected with one another. The first thermoplastic material layer portions have first thicknesses. The second thermoplastic material layer portions have second thicknesses. The first thicknesses are larger than the thickness of the top coating layer. Each first thickness is 4-7 times each second thickness. The invention further discloses an input device with the overlay structure and a method for manufacturing the overlay structure.
Owner:CHICONY ELECTRONICS

Leather-covered driver airbag assembly

The invention discloses a leather-covered driver airbag assembly. The leather-covered driver airbag assembly comprises an airbag body, an airbag cover plate, a leather layer and a logo, wherein the leather layer is adhered to the surface of the airbag cover plate through special glue; the logo is fixed to the leather-covered airbag cover plate by a thermal melting welding technology; the airbag cover plate is fixed to the airbag body through a clamping structure; and weakening line and the structure of a first weakening line are arranged on the airbag cover plate and the leather layer so as toensure smooth expansion of the airbag. According to the assembly, the injection molded airbag cover plate is covered with the leather having decorative sewing lines; the outer surface of the leatheris flat and smooth, and the structure of the first weakening line is arranged on the inner surface of the leather and is completely overlapped with the second weakening line in the airbag cover platein position; the leather and the airbag cover plate treated by a fluorination technology are subjected to press fitting through a jig by utilizing the special glue, and thus the leather and the airbagcover plate are combined; and the adhering performance, the appearance state and the expansion performance meet requirements.
Owner:FAW CAR CO LTD

Portable pressing type air pump

The invention relates to a portable pressing type air pump. The air pump comprises an air pump main body, a one-way air inlet valve, an air release assembly, an air pipe and a connecting piece, wherein the air pump main body comprises an air pump upper cover, an air pump lower cover, a supporting hard sheet and a check plug, and the air release assembly comprises a compression spring and an air release button; an air inlet and outlet hole in one end of the air pump lower cover is connected with the air pipe, the other end of the air pipe is connected with the connecting piece, the other end ofthe connecting piece is connected with a to-be-inflated product, and the check plug is installed in a central fixing hole of the supporting hard sheet; and the periphery of a pressing air bag of theair pump upper cover and the edge of the supporting hard sheet are welded and sealed, and the periphery of the air pump upper cover and the periphery of the air pump lower cover are welded and sealed.The air pump is small in size and easy to carry, a TPU material is environmentally friendly and good in resilience, the air pump is integrally fused and is firm in welding, the air inflow, inflationand non-return functions are achieved in the air pump, space is saved, the appearance is attractive, and the air pump is good in air tightness and worthy of popularization.
Owner:NINGBO ALBERT NOVOSINO CO LTD

Ultrathin small-swing-angle wall switch

InactiveCN113192788AImprove the comfort of pressingComfortable to pressContactsTumbler/rocker switch detailsClassical mechanicsStructural engineering
The invention relates to an ultrathin small-swing-angle wall switch, which comprises a base, a surface cover frame, a gland, a switch toggle, a pressing plate, a movable contact bridge and a static contact, a connecting rod is rotatably arranged on each of two sides of the gland corresponding to the switch toggle, one end of each of the two connecting rods abuts against the pressing plate to form linkage matching of the connecting rods and the pressing plate, the other ends of the two connecting rods are respectively provided with a driving part matched with the switch button, arc-shaped grooves matched with the driving parts of the two connecting rods are respectively arranged on two sides of the switch button, the driving parts are inserted into the arc-shaped grooves in a penetrating mode, and the driving parts move along with the connecting rods and slide in the arc-shaped grooves in a reciprocating mode. The switch button is in linkage fit with the two connecting rods. The switch has the advantages of being simple in structure, stable and reliable in performance, good in pressing hand feeling and high in breaking capacity.
Owner:浙江诺金电器有限公司

Panel membrane switch for inverter

The invention belongs to the technical field of membrane switches, and discloses a panel membrane switch for an inverter. The panel membrane switch comprises a panel, an upper conducting layer, a lower conducting layer and an insulation isolation layer, the insulation isolation layer is clamped between the upper conducting layer and the lower conducting layer, the panel is adhered to one side, deviating from the lower conducting layer, of the upper conducting layer, an arc-shaped reed is embedded in the upper conducting layer, one side, facing the lower conducting layer, of the arc-shaped reed is integrally connected with a moving contact perpendicular to the lower conducting layer, a trigger groove is formed in the position, corresponding to the moving contact, of the lower conducting layer, an elastic conducting thin film is sealed at the top of the trigger groove, and the moving contact abuts against the elastic conducting thin film or keeps a distance from the elastic conducting thin film; and triggering pieces are included and arranged on the arc-shaped reed, are symmetrically arranged on the two sides of the moving contact, and are used for conducting the upper conducting layer and the lower conducting layer. The membrane switch is simple and stable in structure, good in pressing hand feeling and long in service life.
Owner:深圳市汇慧鑫科技有限公司

Mouse

The invention relates to a mouse. The mouse includes a bottom shell, a middle frame, an upper cover, a PCB and a key switch which are sequentially installed and connected with one another, wherein thePCB is installed on the bottom shell, the middle frame is provided with a clamping part for installing the key switch, the key switch is a mechanical keyboard switch which achieves signal connectionor signal disconnection with the PCB, a key cap is connected with the mechanical keyboard switch, and the upper cover is provided with a key slot in which the key cap can move up and down. The mouse is reasonable in structural design, reliable in performance, long in service life and convenient to plug and insert; normal users all can replace the mouse through simple operation, and by adjusting the parameters of a reset spring and an elastic piece, mechanical pressing hand feeling and pressing comfort in different degrees can be generated; the switch path is longer than that of a traditional mouse, the mouse can be pressed more smoothly, and the good hand feeling can still remain after long-term usage, so that the mouse is extremely suitable for personalized customization.
Owner:HUIZHOU GATERON ELECTRONIC TECH CO LTD +1

Vertical key keyboard

The invention discloses a vertical key keyboard which comprises a keyboard body; a plurality of keys are arranged on the keyboard body; each key comprises two first metal PIN plates, two second metal PIN plates and a key cap; a first metal wire is connected between the two first metal PIN plates, a second metal wire is connected between the two second metal PIN plates, the first metal wire and the second metal wire are arranged in a crossed mode, the first metal wire is located above the second metal wire, and the key cap is arranged above the first metal wire in a covering mode. The invention is applied to the technical field of keyboards.
Owner:SHENZHEN DOKING TECH CO LTD

touch module

ActiveCN104750287BReduced assembly stepsReduce the problem of pressing empty travelInput/output processes for data processingEngineeringInverted u
A touch module, comprising: a hollow frame, a positioning piece, and a touch unit. The positioning piece includes: a body, an extension, and a ㄇ-shaped structure. The extension part is connected with the body and fixedly connected with the frame. The ㄇ-shaped structure is connected to the frame body and has an abutment portion and a pair of elastic arms, the elastic arms are connected to the body, and a groove is formed between the ㄇ-shaped structure and the body, wherein the abutment portion and the body The extension part is located on the opposite side of the body, and the contact part is located between the elastic arms. The touch unit is connected with the body and forms a bump, wherein when the touch unit is subjected to an external force, the bump abuts against the abutting portion. The present application not only reduces the assembly steps of the touch module and increases the production efficiency by using the positioning member and the frame, but also obtains a better and consistent pressing feel and reduces the problem of pressing empty travel caused by assembly.
Owner:ACER INC

Keyboard

The invention discloses a keyboard comprising a silica gel substrate, a plurality of touch parts and a plurality of keycaps. The silica gel substrate is provided with a plurality of mutually spaced keyfields, wherein one part of the silica gel substrate is upwards heaved from the silica gel substrate to form each keyfield; each keyfield comprises a connection part and connection walls at the periphery of the connection part; and the connection part is composed of the top wall of the keyfield and is connected with the silica gel substrate by the connection walls. The plurality of touch parts respectively extend out downwards from the connection parts of the plurality of the keyfields and the downward extended height is less than the height of the connection walls. The plurality of the keycaps are respectively arranged on the surface of the plurality of the keyfields. With the adoption of the keyboard of the embodiment, the overall thickness of the overall machine can be reduced due to that the downward extended height of the touch parts of the keyfields is less than the convex height of the keyfields, namely no more than the plane where the bottom face of the silica gel substrate exists, great advantages are brought to design of an ultrathin machine, press feeling is good, and the structure is reliable.
Owner:BYD CO LTD

A waterproof sensor keyboard

A waterproof inductive keyboard, the keyboard includes a substrate, the substrate is dug with a number of grooves, the grooves are used to install the rebound mechanism connected to the keycap, the groove is formed on the substrate with a thinner area, the In the region, after the keycap is pressed, the pressure is transmitted to the region through the rebound mechanism to form a substrate deformation region. A strain sensor is arranged on the back of the substrate close to the substrate deformation region, and the strain sensor is used to detect the deformation of the substrate deformation region. Each substrate deformation area on the back of the substrate is provided with a transverse axis strain sensor and a longitudinal axis strain sensor, each transverse axis strain sensor is connected in series, and each longitudinal axis strain sensor is connected in series to form a strain sensor array on the back of the substrate , the array has a channel in the direction of the horizontal axis and a channel in the direction of the vertical axis, and by simultaneously collecting the strain signals of the channel in the direction of the horizontal axis and the channel in the direction of the vertical axis, the coordinates of the pressed button and the pressure of the button are obtained.
Owner:上海敏传智能科技有限公司

Overlay structure, input device and method for manufacturing the overlay structure

The invention discloses an overlay structure which comprises a bottom coating layer, a top coating layer and a thermoplastic material layer. The thermoplastic material layer is overlapped between the bottom coating layer and the top coating layer. The thermoplastic material layer comprises first thermoplastic material layer portions and second thermoplastic material layer portions which are connected with one another. The first thermoplastic material layer portions have first thicknesses. The second thermoplastic material layer portions have second thicknesses. The first thicknesses are larger than the thickness of the top coating layer. Each first thickness is 4-7 times each second thickness. The invention further discloses an input device with the overlay structure and a method for manufacturing the overlay structure.
Owner:CHICONY ELECTRONICS

Keyboard

The invention discloses a keyboard comprising a silica gel substrate, a plurality of touch parts and a plurality of keycaps. The silica gel substrate is provided with a plurality of mutually spaced keyfields, wherein one part of the silica gel substrate is upwards heaved from the silica gel substrate to form each keyfield; each keyfield comprises a connection part and connection walls at the periphery of the connection part; and the connection part is composed of the top wall of the keyfield and is connected with the silica gel substrate by the connection walls. The plurality of touch parts respectively extend out downwards from the connection parts of the plurality of the keyfields and the downward extended height is less than the height of the connection walls. The plurality of the keycaps are respectively arranged on the surface of the plurality of the keyfields. With the adoption of the keyboard of the embodiment, the overall thickness of the overall machine can be reduced due to that the downward extended height of the touch parts of the keyfields is less than the convex height of the keyfields, namely no more than the plane where the bottom face of the silica gel substrate exists, great advantages are brought to design of an ultrathin machine, press feeling is good, and the structure is reliable.
Owner:BYD CO LTD

One-key start switch

The invention provides a one-key start switch. The one-key start switch comprises a shell, a circuit board is arranged in the shell, and a decorative ring is arranged at one end of the shell; the one-key start switch further comprises a middle frame, conductive rubber and an indicator light are arranged on the circuit board, a driving shaft is arranged in the middle frame, a button is arranged atone end of the driving shaft, and the button is located at the center of the decorative ring; an IMMO coil electrically connected with the circuit board is arranged on the outer wall of the middle frame, a plug slot is arranged at one end, towards the shell, of the middle frame along the radial direction, a noise reduction block is inserted into the plug slot, and the noise reduction block protrudes from the inner wall of the middle frame, a blocking part is arranged at the outer wall of one end, relative to the button, of the driving shaft; the noise reduction block enables the blocking partto impact the noise reduction block to realize noise reduction when the driving shaft is reset; a light guiding hole is formed on the button, and a light guiding block opposite to the indicator lamp is inserted into the light-guiding hole. The one-key start switch can authenticate the charging of a smart key when the smart key has no power or is in feeding, the noise is low when the start switch is pressed, and the pressing hand-feeling is excellent.
Owner:杭州国威科技有限公司

key structure

A button structure, comprising a casing, a shaft body, a first magnetic assembly and a second magnetic assembly. The casing has a bottom and a top opposite, and has a first opening at the top. The shaft passes through the first opening and is assembled on the casing, and the shaft is suitable for being pressed and moving along a pressing direction from the top to the bottom. The first magnetic component is arranged on the shaft body. The second magnetic component is arranged on the casing, wherein the first magnetic component and the second magnetic component are respectively located inside and outside of the casing.
Owner:LITE ON ELECTRONICS (GUANGZHOU) LTD +1

Key structure and its lifting mechanism

ActiveCN108511213BAssembly accuracy is easy to maintainStability is easy to maintainContact operating partsKey pressingEngineering
The invention discloses a key structure. The key structure comprises a lifting mechanism connected between a key cap and a base. The lifting mechanism comprises a first support and a second support which are engaged with each other. The first support comprises a first groove and a first sliding part which are arranged adjacently along a first direction. The first groove is provided with a first curved bottom surface, and extends in the direction vertical to the first direction. The second support comprises a second sliding part and a second groove which are arranged adjacently along the firstdirection. The second groove is provided with a second curved bottom surface, and extends in the direction vertical to the first direction. The first sliding part is arranged on the second curved bottom surface in a sliding manner, and the second sliding part is arranged on the first curved bottom surface in the sliding manner. The first sliding part and the second sliding part simultaneously correspondingly slide on the second curved bottom surface and the first curved bottom surface, so that mutual rotation of the first support and the second support relative to the first direction is realized. The assembling accuracy of the key structure and the action stability of the lifting mechanism are easily maintained.
Owner:DARFON ELECTRONICS (SUZHOU) CO LTD +1

Touch switch and manufacturing method of switch spring plate

The invention discloses a touch switch and a manufacturing method thereof. The touch switch comprises a base, a switching-on plate, a spring plate and a key, the three of which are orderly arranged in the base, and an upper cover locked with the base; the spring plate is appropriately rectangular, the middle part of the spring plate is a circular plane, and skirts which are capable of enabling the spring plate to be arched and symmetrical extend outwards and downwards from the two opposite outer edges of the circular plane; the outer edges of the skirts are of cambered structures; the symmetrical edges on the two sides of each skirt are tangent with the outer circle of the circular plane to form two parallel straight edge. The spring plate of the touch switch is of an appropriately strip-like skirt arched structure, and compared with a square spring plate, the travel of pressing can be reduced and the pressing feel is more comfortable; the spring plate of the touch switch is long in service life.
Owner:DONGGUAN LINJVE IND INVESTMENTS

Manufacturing method of multicolor pressing toy

The invention discloses a manufacturing method of a multicolor pressing toy, and relates to the technical field of toy processing. Comprising the following steps: rubber mixing: putting silica gel at 40 DEG C and silica gel at 60 DEG C into a rubber mixing machine, and mixing and refining to obtain silica gel at 50 DEG C; color mixing: adding color master batch according to the color mixing proportion in the rubber mixing process for mixing to prepare silica gel with the required color; cutting: cutting the silica gel into strips through a cutting mechanism; and material placing, wherein at least two pieces of strip-shaped silica gel are attached together through a material placing mechanism. By arranging the material cutting mechanism and the material placing mechanism, a plurality of silica gel strips with different colors can be spirally twisted into a fried dough twist shape through the material placing mechanism, so that a subsequently formed toy is better in effect and more attractive in appearance, 40-degree silica gel and 60-degree silica gel are mixed and processed, the silica gel is better than conventional 50-degree silica gel, the silica gel is used for the material cutting mechanism after being refined, and the production efficiency is improved. The formed toy is better in pressing hand feeling, the operation mode is simple and rapid, the machining efficiency is effectively guaranteed, economic benefits are met, and the application prospect is wide.
Owner:SHENZHEN KEAN SILICONE PROD CO LTD

Convenient and temperature adjustable valve core

The invention discloses a convenient and temperature adjustable valve core, which comprises a shell, a temperature adjusting rotary knob, a switching assembly and a center bolt, wherein the shell comprises a main body and a water channel; the temperature adjusting rotary knob is movably connected with the main body; a hot water inlet and a cold water inlet are arranged on the water channel, and amixed water path is formed in the water channel; the center bolt is positioned in the shell, and a return spring is arranged between the center bolt and the main body; an adjusting wall is arranged atthe position where the the center bolt corresponds to the hot water inlet; the adjusting wall is used for controlling the amount of water entering the hot water inlet; the center bolt comprises a joint part, a disk body and a piston part; the switching assembly drives the center bolt to move axially through the joint part, and the temperature adjusting rotary knob is connected with the disk bodyto drive the center bolt to rotate. The convenient and temperature adjustable valve core provided by the invention integrates two functions of temperature adjusting and water discharging simultaneously by using a simple structure, and the valve core has a small volume and a good hand pressing feel.
Owner:XIAMEN EASO CO LTD

Buckle assembly type mahjong machine control disk

The invention belongs to the technical field of machinery, relates to a buckle assembly type mahjong machine control disk, and resolves technical problems of existing unreasonable designs and the like. The buckle assembly type mahjong machine control disk comprises a disk body, an accommodation chamber for placing a dice is arranged at the center of the disk body, a seal cover made of transparent materials is fixed at a position of an opening of the accommodation chamber, a plurality of button holes located on the periphery of the accommodation chamber are arranged on the disk body, a button is mounted in each button hole, the seal cover is fixed at a position of the opening of the accommodation chamber through a pressing ring with a pressing edge arranged at the upper end of the pressing ring, and a buckle type limiting structure capable of blocking the pressing ring to continue rotating when the pressing ring clockwise or anticlockwise rotates is arranged between the pressing ring and the opening of the accommodation chamber. The buckle assembly type mahjong machine control disk has the advantages of being reasonable in design, simple in structure, easy to assemble, and high in structure strength; a membrane isn't separated from a panel even if the disk is used for a long time or the temperature changes in a wide range, and the service life is long; and the buttons are ergonomically designed, good in pressure touch, not easy to abrade, and easy to process and manufacture.
Owner:ZHE JIANG FENG SHANG TECHONOLOGY CO LTD

Key switch capable of switching between sound and silent states

PendingCN110706958AImprove convenienceRealize the sound effect of pressingElectric switchesKey pressingEngineering
The invention discloses a key switch capable of switching sound and silent states; a shell is included; the shell is mainly composed of a base and an upper cover arranged on the base. The key switch also has a guide core arranged on the base, a switching piece that drives the guide core to rotate and extends out of the shell, and a sounding elastic piece and the a silent elastic piece that are arranged on the side edges of the guide core respectively; the middle part of the sounding elastic piece and the middle part of the silent elastic piece are both arched upwards to form an upper arch part, and the arched height of the upper arch part of the sounding elastic piece is greater than that of the upper arch part of the silent elastic piece; and at least one acting arm acting on the upper arch part is arranged on the side edge of the guide core. According to the key switch capable of switching between the sound state and the silent state, free switching between the sounding effect and the silent pressing effect can be achieved, a user can freely and flexibly switch between the sound state and the silent state according to the use requirement of the user, operation is convenient and fast, the flexibility of the product is high, different use requirements of the user are met, and great convenience is brought to use of the user.
Owner:DONGGUAN CITY KAIHUA ELECTRONICS
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