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34results about How to "Prevent back odor" patented technology

Cable trench and cable trench drainage system

The invention provides a cable trench and a cable trench drainage system, and belongs to the technical field of electric power facilities. The cable trench comprises a cable trench body, a drainage channel and a water collecting well, the cable trench body comprises a cable trench, a plurality of cable supports and a cable trench cover plate, the cable supports are arranged on the side wall of the cable trench, the cable trench cover plate is arranged on the upper portion of the cable trench, the drainage channel comprises a water inlet section, a bent pipe section and a water outlet section, one end of the water inlet section is communicated with the bottom of the cable trench, the other end of the water inlet section is communicated with one end of the bent pipe section, the other end of the bent pipe section is communicated with one end of the water outlet section, the other end of the water outlet section is communicated with the side wall of the water collecting well, and an anti-backflow device is arranged at the position where the side wall of the water collecting well is communicated with the water outlet section. The cable trench is good in sealing performance, cables are arranged in a layered and branched mode and can be arranged in order to facilitate laying and overhauling, meanwhile, the anti-backflow drainage system is arranged, accumulated water in the cable trench is reduced, and the cables are prevented from being damped and damaged.
Owner:国网河南省电力公司邓州市供电公司

Kitchen and toilet modular water supplying and discharging device for tall building

The invention provides a kitchen and toilet modularized water supply and drainage device, which comprises a water collecting tank, a vertical pipe nipple, a water collecting bucket arranged at the lower part of the water collecting tank, and a closet outlet for communicating the sealed transverse branch pipe of the vertical pipe nipple and connecting one end of the sealed transverse branch pipe, wherein, the inside of the water collecting tank is provided with an air storage chamber, the upper end and the lower end of the air storage chamber are respectively communicated with the vertical pipe nipple, the water collecting tank is provided with a sealed pipe and a three-way valve, one end of the sealed pipe communicates with the water collecting bucket or the vertical pipe nipple, and the other end of the sealed pipe extends out from the top of the water collecting tank and is provided with a water supply and drainage fitting connecting opening, the three-way valve is mounted on the sealed pipe; the top of the water collecting tank is provided with a repair hole; the repair hole is corresponding to the three-way valve; The device achieves the purpose of realizing control of water supply and drainage by arranging the sealed pipe and the three-way valve in the water collecting tank, needs no other water collection floor drains, is beneficial to prevent returning odour and beautifying the interior decoration environment, and has the outstanding advantages of beautiful ground and good autonomy.
Owner:王凤蕊

Modularization same-layer drainage device for high-rises and mounting method thereof

ActiveCN107237395AEffectively cover installation gapsSolve the problem of stagnant water leakageSewerage structuresSewer pipelinesVertical tubeWater discharge
The invention provides a modularization same-layer drainage device for high-rises and a mounting method thereof. The device comprises a water accumulating box, a vertical tube connecting pipe, a lower air pipe which penetrate the bottom wall of the water accumulating box, an upper air pipe which is installed on the top cover of the water accumulating box and is communicated with the inner part of the water accumulating box; and a waste water discharge inlet which is installed in the top cover of the water accumulating box; a vertical tube connecting pipe is provided with a water outlet which is positioned inside the water accumulating box; the waste water drainage inlet and a water outlet are communicated; the vertical tube connecting pipe is provided with a side discharge connecting member which is communicated with a water closet discharge port, wherein the side discharge member comprises a flat sewage box; an end, communicated with the vertical tube connecting pipe, of the sewage box is provided with a sewage outlet; a side wall of the sewage box is provided with a water closet connecting port whose opening direction is vertical to the axis of the vertical tube connecting pipe. The modularization same-layer drainage device for high-rises of the invention has a simple structure, scientific design and reliable performance and is convenient to use; the device has excellent seepage-proofing performance; stink proofing is realized by concentrated water sealing; the water closet discharge port is convenient to mount and is not liable to block.
Owner:河南锐诚节能环保科技有限公司

Same-layer drainage whirlcone composite member

The invention discloses a same-layer drainage whirlcone composite member. The same-layer drainage whirlcone composite member includes a whirlcone body and a lower drainage pipe connected with the bottom of the whirlcone body in a butt-joint mode, wherein an annular groove is formed in the periphery of the top of the lower drainage pipe, at least one ponding outlet is formed in the top of the innerwall of the annular groove, a tube part inserted into the annular groove is arranged at the bottom of the whirlcone body, the top of the tube part and the top of the outer wall of the annular grooveare sealed, at least one ponding inlet is formed in the top of the tube part, the height of the ponding inlet is level with the ground or below the ground, the height of the ponding inlet is higher than that of the ponding outlet, and a gap is reserved between the bottom of the tube part and the bottom of the annular groove to form a water seal structure in the annular groove. Ponding on the ground can enter the annular groove through the ponding inlet, when the water level of the annular groove reaches the height of the ponding outlet, the ponding can be discharged into the lower drainage pipe through the ponding outlet, a water seal structure is formed in the annular groove, and smelly returning can be further prevented.
Owner:上海深海宏添建材有限公司

Novel double-vertical-pipe water discharging system

The invention discloses a novel double-vertical-pipe water discharging system, and belongs to the technical field of a building indoor water discharging system. Through a water vapor separation module, water and gas in a water discharging transverse support pipe are respectively communicated with a water discharging vertical pipe and a ventilation vertical pipe, so that a water seal device communicated with the water discharging transverse branch pipe cannot be influenced by the gas pressure fluctuation of the water discharging vertical pipe; a water vapor separation and gas circulation waterdischarging system is formed; the circulation supplementation of gas in the water discharging vertical pipe is favorably realized; the gas pressure balance in the water discharging vertical pipe is stabilized; the smooth discharging of water flow in the water discharge vertical pipe is ensured; the water discharging capability is improved; the ventilation process and realization path of a conventional H type communication double-vertical-pipe water discharging system are fundamentally changed; the problems that the water discharging transverse pipe and the water discharging vertical pipe are communicated in a sealed way, the indirect communication mode of the water discharging vertical pipe and the ventilation pipe H connecting pipe is used, so that the odor returns from a floor drain canbe solved; meanwhile, the technical problem that the ventilation pipe or the annular ventilation pipe of the existing device is singly communicated with the ventilation vertical pipe, so that the surface mounting is needed is also solved.
Owner:PUYANG OCTAVIA BUILDING ENERGY SAVING TECHOLOGY CO LTD

Pipeline connection device for preventing overflow return and sludge

ActiveCN102330458AAvoid the problem of back odorIncrease replacement frequencyDomestic plumbingSludgeMechanical engineering
The invention provides a pipeline connection device for preventing overflow return and sludge. The device comprises a riser connecting pipe, a water sealing tank and a water sealing and dividing hanging plate, wherein the top end of the water sealing and dividing hanging plate is hinged with the inner side of the tank wall at the top of the water sealing tank; the riser connecting pipe penetrates through the water sealing tank and is provided with a draining port; when the bottom end of the water sealing and dividing hanging plate supports against the tank wall of the water sealing tank, the water sealing tank is divided into two tank bodies which are not mutually communicated by using the water sealing and dividing hanging plate; the draining port is arranged in one tank body; a water feeding port is arranged on the tank wall of the other tank body; a tank body separating board is arranged at the bottom of the water sealing tank and is positioned between the riser connecting pipe and the water sealing and dividing hanging plate; the top of the tank body separating board is lower than the tank wall at the top of the water sealing tank and is not lower than the bottom end of the water sealing and dividing hanging plate; and the lowest part of the draining port is level with the bottom of the water sealing tank. The device has the advantages of scientific design, reliable performance and capabilities of automatically sealing and preventing overflow return and sludge.
Owner:王凤蕊

Building drainage plastic stack with spiral grooves

ActiveCN104565565AAvoid water plugging situationsAvoid destructionPipe elementsRigid pipesVertical tubeWater flow
The invention discloses a building drainage plastic stack with spiral grooves. The plastic stack comprises a plastic stack body, wherein the inner wall of the plastic stack body is coaxially and circumferentially provided with a plurality of spiral grooves along the axis of the stack; the junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of notches of the spiral grooves and the inner wall of the plastic stack body are all of circular arc transition structures. The junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of the notches of the spiral grooves and the inner wall of the plastic stack body are all of the circular arc transition structures, so the spiral grooves are of the streamline-shaped arc structures with small curvature, namely large curvature radius; the situation that the water flow moves towards the center of the stack to produce water blockage is avoided according to the theory of a fluid wall attachment effect, the fluctuation of pressure in the stack is reduced, the drainage flow rate within a certain pressure fluctuation range is improved, alternate impact of the water flow to the stack is also avoided, and the pipeline vibration and the drainage noise are greatly reduced.
Owner:上海深海宏添建材有限公司

Water-draining and water-saving conversion device

The invention provides a water-draining and water-saving conversion device. The conversion device comprises an outer valve cylinder and an inner valve cylinder, wherein the outer valve cylinder is provided with an outer water inlet, a first outer water outlet and a second outer water outlet; the inner valve cylinder is provided with inner water inlets and an inner water outlet; the inner valve cylinder is arranged inside the outer valve cylinder, and is in running fit with the outer valve cylinder between a first position and a second position; when at the first position, the inner water outlet is only correspondingly communicated with the first outer water outlet; when at the second position, the inner water outlet is only correspondingly communicated with the second outer water outlet; when at the first position and at the second position, the inner water inlets are correspondingly communicated with the outer water inlet. By the rotation of the inner valve cylinder, the water flow direction can be butted and conversed between the first outer water outlet and the second outer water outlet, so that waste water flows towards a water-saving tank or a drainage pipe, and the trouble of the direct conversion of a floor drain is avoided; the conversion device is convenient to use; when the second outer water outlet is blocked, the floor drain is correspondingly blocked, and the odor returning phenomenon is effectively avoided.
Owner:王凤蕊

A building drainage plastic riser with a spiral single blade

The invention discloses a building drainage plastic vertical pipe with a spiral single blade. The building drainage plastic vertical pipe comprises a plastic vertical pipe body, wherein the inner wall of the plastic vertical pipe body is coaxially provided with the spiral single blade along the axis direction of the vertical pipe; the connection part of the root part of the spiral single blade and the inner wall of the plastic vertical pipe body is of a circular arc transition structure. According to the pipe, the connection part of the root part of the spiral single blade and the inner wall of the plastic vertical pipe body is of the circular arc transition structure; the curvature is reduced greatly (the curvature radius is increased); according to the fluid wall attachment effect theory, when water in the pipe falls off along the pipe wall, the water flow is adsorbed to the pipe wall and cannot be removed so as to form a good wall attachment water film fluidic state, so that the situation that the water flow moves toward the center of the vertical pipe to generate water cork flow is prevented; the fluctuation of pressure in the pipe is reduced; the water drainage flow rate within a certain pressure fluctuation range is improved; the alternative impact by the water flow to the pipe wall is also prevented, so that the pipeline vibration and drained water noise are buffered greatly.
Owner:上海深海宏添建材有限公司 +1

Pipe accessing device

The invention provides a pipe accessing device. The pipe accessing device comprises a stand pipe connecting pipe, a water seal tank and a water seal partition hanger plate arranged in the water seal tank, wherein the top and two sides of the water seal partition hanger plate are respectively in sealing connection with the inner side of the wall of the water seal tank, the stand pipe connecting pipe penetrates through the water seal tank and is provided with a water outlet which is positioned in the water seal tank, a water inlet is arranged on the wall of the water seal tank, the water outlet and the water inlet are respectively arranged at the two sides of the water seal partition hanger plate, and the lowest position of the water outlet is not lower than the bottom end of the water seal partition hanger plate. The device has the advantages of being scientific in design, reliable in properties and capable of preventing odor return of the water seal.
Owner:王凤蕊

Kitchen and toilet modular water supplying and discharging device for tall building

ActiveCN101435212BPrevent back odorBeautify the interior decoration environmentWater closetsDomestic plumbingWater collectionToilet
The invention provides a kitchen and toilet modularized water supply and drainage device, which comprises a water collecting tank, a vertical pipe nipple, a water collecting bucket arranged at the lower part of the water collecting tank, and a closet outlet for communicating the sealed transverse branch pipe of the vertical pipe nipple and connecting one end of the sealed transverse branch pipe, wherein, the inside of the water collecting tank is provided with an air storage chamber, the upper end and the lower end of the air storage chamber are respectively communicated with the vertical pipe nipple, the water collecting tank is provided with a sealed pipe and a three-way valve, one end of the sealed pipe communicates with the water collecting bucket or the vertical pipe nipple, and the other end of the sealed pipe extends out from the top of the water collecting tank and is provided with a water supply and drainage fitting connecting opening, the three-way valve is mounted on the sealed pipe; the top of the water collecting tank is provided with a repair hole; the repair hole is corresponding to the three-way valve; The device achieves the purpose of realizing control of water supply and drainage by arranging the sealed pipe and the three-way valve in the water collecting tank, needs no other water collection floor drains, is beneficial to prevent returning odour and beautifying the interior decoration environment, and has the outstanding advantages of beautiful ground and good autonomy.
Owner:王凤蕊

Multifunctional drainage stand pipe through floor board integrated device

The invention discloses a multifunctional drainage stand pipe through floor board integrated device, and belongs to the technical field of building indoor drainage systems. According to the drainage stand pipe through floor board integrated device, a drainage stand pipe short connection, a ventilation stand pipe short connection, a drainage cross branch pipe connecting opening and a water collecting tank are integrated into a whole, simple inserting connection and independent mounting of a drainage system layer and upper-lower layers of pipelines such as a drainage stand pipe, a ventilation stand pipe, a drainage cross branch pipe and a water proof layer close up are achieved, the multifunctional drainage stand pipe through floor board integrated device has the functions of fast mounting,reliable quality, good odor resistant effect, small occupation space and the like, and the mounting quality and the drainage odor resistant performance are greatly improved. The drainage stand pipe short connection communicates with the ventilation stand pipe short connection through the water collecting tank, balance of directly communicating a drainage cross branch pipe water lock outlet with the ventilation stand pipe, and then communicating with atmosphere is achieved in the integrated device fundamentally, and the technical problem that a floor drain has odor due to closed communication of the drainage cross branch pipe and the drainage stand pipe is effectively solved.
Owner:PUYANG OCTAVIA BUILDING ENERGY SAVING TECHOLOGY CO LTD

Modularized same-floor drainage device for building and mounting method thereof

The invention provides a modularized same-floor drainage device for a building and a mounting method thereof. The drainage device comprises a water collection tank, a standpipe connecting pipe which is penetrated in the water collection tank and a wastewater draining inlet which is formed in a top cover of the water collection tank, wherein a water outlet located in the water collection tank is formed in the standpipe connecting pipe; the wastewater draining inlet is communicated with the water outlet; a transverse sewage pipe is embedded in the upper part of the water collection tank; the bottom of the sewage pipe is not lower than the bottom of the water collection tank; the top of the sewage pipe is not lower than the top cover of the water collection tank; a pedestal pan connecting port is formed at one end of the sewage pipe; a sewage outlet is formed at the other end of the sewage pipe; the sewage outlet is communicated with the standpipe connecting pipe; an axis distance between the pedestal pan connecting port of the sewage pipe and the standpipe connecting pipe is not more than 500mm. The modularized same-floor drainage device for the building provided by the invention has the characteristics of simple structure, scientific design, convenience in use, reliable performance, excellent anti-seepage effect, gathered water seal, odor-returning prevention, less thickness of ground layer and material-saving effect.
Owner:王凤蕊

Overflow-proof same-layer water drainage riser connecting piece

The invention provides an overflow-proof same-layer water drainage riser connecting piece. The overflow-proof same-layer water drainage riser connecting piece comprises a collection tank, a riser connecting pipe penetrating the collection tank, a collection tank top cover and a water seal tank, wherein the riser connecting pipe is provided with a water outlet in the collection tank, the top tank wall of the water seal tank is formed by the top cover, a water inlet and a waterspout are arranged on the wall of the water seal tank, a tank body water seal partition plate is arranged in the water seal tank, the top of the tank body water seal partition plate is articulated with the inner side of the top wall of the water seal tank, the bottom end of the tank body water seal partition plate is higher than the bottom of the water seal tank, and the lowest position of the waterspout is not lower than the bottom end of the tank body water seal partition plate and not lower than the lowest position of the water outlet; and when the bottom end of the tank body water seal partition plate presses against the wall of the water seal tank, the water seal tank can be divided into two tank bodies which are not communicated with each other, and the water inlet and the waterspout are respectively arranged on the two tank bodies which are not communicated with each other. The device has the advantages of being scientific in design, reliable in properties and capable of preventing odor return of the water seal.
Owner:王凤蕊

A building drainage plastic riser with a spiral groove

ActiveCN104565565BAvoid water plugging situationsAvoid destructionPipe elementsRigid pipesVertical tubeWater flow
The invention discloses a building drainage plastic stack with spiral grooves. The plastic stack comprises a plastic stack body, wherein the inner wall of the plastic stack body is coaxially and circumferentially provided with a plurality of spiral grooves along the axis of the stack; the junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of notches of the spiral grooves and the inner wall of the plastic stack body are all of circular arc transition structures. The junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of the notches of the spiral grooves and the inner wall of the plastic stack body are all of the circular arc transition structures, so the spiral grooves are of the streamline-shaped arc structures with small curvature, namely large curvature radius; the situation that the water flow moves towards the center of the stack to produce water blockage is avoided according to the theory of a fluid wall attachment effect, the fluctuation of pressure in the stack is reduced, the drainage flow rate within a certain pressure fluctuation range is improved, alternate impact of the water flow to the stack is also avoided, and the pipeline vibration and the drainage noise are greatly reduced.
Owner:上海深海宏添建材有限公司

Pipeline connection device for preventing sludge

ActiveCN102330454AAvoid the problem of back odorIncrease replacement frequencyDomestic plumbingSludgeMechanical engineering
The invention provides a pipeline connection device for preventing sludge. The device comprises a riser connecting pipe, a water sealing tank and a water sealing and dividing hanging plate arranged in the water sealing tank, wherein the top end and two sides of the water sealing and dividing hanging plate are respectively connected with the inner side of the tank wall of the water sealing tank in a sealing manner; the riser connecting pipe penetrates through the water sealing tank and is provided with a draining port; the draining port is positioned in the water sealing tank; a water feeding port is arranged on the tank wall of the water sealing tank; the draining port and the water feeding port are respectively arranged at two sides of the water sealing and dividing hanging plate; a tank body separating board is arranged at the bottom of the water sealing tank and is positioned between the riser connecting pipe and the water sealing and dividing hanging plate; the top of the tank body separating board is lower than the tank wall at the top of the water sealing tank; the top of the tank body separating board is not lower than the bottom end of the water sealing and dividing hanging plate; and the lowest part of the draining port is level with the bottom of the water sealing tank. The device has the advantages of scientific design, reliable performance, water sealing for odor prevention and sludge prevention.
Owner:王凤蕊

Odor-resisting accumulated water treating device with preformed hole

InactiveCN106149848APrevent back odorPrevent the spread of germsSewerage structuresSeptic tank
The invention discloses an odor-resisting accumulated water treating device with a preformed hole and aims at solving the problems that accumulated water in a packing course is not convenient to drain, and odor and harmful gases are returned from a septic tank. The adopted technical scheme is that both a casing and a water sealing part are of shell-like structures of which upper parts and lower parts are opened; in addition, the water sealing part is inserted into the casing; the water sealing part and the casing are matched to form a water sealing structure of which the size is greater than 50mm; the accumulated water is drained from a draining hole of the water sealing part through the water sealing structure; a first connector for positioning and inserting a stand pipe is arranged at the lower end of the casing; a water sealing groove is formed in the upper end of the casing; the depth of the water sealing groove is greater than 50mm; a second connector for positioning and inserting the stand pipe is arranged at the upper end of the water sealing part; a water sealing plug board is arranged at the lower end of the water sealing part; the water sealing plug board is correspondingly inserted into the water sealing groove for matching to form a water sealing structure. The odor-resisting accumulated treating device disclosed by the invention can be widely applied to the field of treatment of the accumulated water in the packing course.
Owner:高占文

Pipeline connection device for preventing overflow return and sludge

ActiveCN102330458BAvoid the problem of back odorIncrease replacement frequencyDomestic plumbingSludgeMechanical engineering
The invention provides a pipeline connection device for preventing overflow return and sludge. The device comprises a riser connecting pipe, a water sealing tank and a water sealing and dividing hanging plate, wherein the top end of the water sealing and dividing hanging plate is hinged with the inner side of the tank wall at the top of the water sealing tank; the riser connecting pipe penetrates through the water sealing tank and is provided with a draining port; when the bottom end of the water sealing and dividing hanging plate supports against the tank wall of the water sealing tank, the water sealing tank is divided into two tank bodies which are not mutually communicated by using the water sealing and dividing hanging plate; the draining port is arranged in one tank body; a water feeding port is arranged on the tank wall of the other tank body; a tank body separating board is arranged at the bottom of the water sealing tank and is positioned between the riser connecting pipe and the water sealing and dividing hanging plate; the top of the tank body separating board is lower than the tank wall at the top of the water sealing tank and is not lower than the bottom end of the water sealing and dividing hanging plate; and the lowest part of the draining port is level with the bottom of the water sealing tank. The device has the advantages of scientific design, reliable performance and capabilities of automatically sealing and preventing overflow return and sludge.
Owner:王凤蕊

A modular same-floor drainage device for buildings and its installation method

ActiveCN108193740BEffectively cover installation gapsSolve the problem of stagnant water leakageSewerage structuresDomestic plumbingArchitectural engineeringWastewater
The invention provides a modular same-floor drainage device for buildings and its installation and construction method. The drainage device includes a water collection tank, a standpipe connecting pipe pierced in the water collection tank, and at least one waste water set on the top cover of the water collection tank. Drainage inlet; the riser connecting pipe is provided with a water outlet located in the water collection tank, and the waste water discharge inlet is connected with the water outlet through a water seal mechanism. The modular same-floor drainage device for buildings of the present invention has the advantages of simple structure, scientific design, convenient use, reliable performance, outstanding anti-leakage effect, centralized water seal to prevent back-odor, convenient installation of toilet drain outlet and not easy to be blocked.
Owner:PUYANG OCTAVIA BUILDING ENERGY SAVING TECHOLOGY CO LTD

Modularization same-layer drainage device for high-rises and mounting method thereof

The invention provides a modularization same-layer drainage device for high-rises and a mounting method thereof. The drainage device comprises a water accumulating box, a vertical tube connecting pipe which penetrates in the water accumulating box, a lower air pipe which penetrate the bottom wall of the water accumulating box and is not higher than the top of a top cover of the water accumulating box, an upper air pipe which is installed on the top cover of the water accumulating box and is communicated with the inner part of the water accumulating box; and a waste water discharge inlet which is installed in the top cover of the water accumulating box; a gas passageway is installed between the upper air pipe and the lower air pipe; a vertical tube connecting pipe is provided with a water outlet which is positioned inside the water accumulating box; the waste water drainage inlet and a water outlet are communicated; the top of the lower air pipe is not lower than the highest point of the water outlet; a transversely arranged sewage pipe is embedded in an upper part of the water accumulating box; the axial distance between a water closet connecting port of the sewage pipe and the vertical tube connecting pipe is not larger than 500mm. The modularization same-layer drainage device for high-rises of the invention has a simple structure, scientific design and reliable performance and is convenient to use; the device has excellent seepage-proofing performance; stink proofing is realized by concentrated water sealing; the ground layer thickness is small and material is saved.
Owner:河南锐诚节能环保科技有限公司

A spiral single blade cyclone for building drainage

The invention discloses a helical single-blade cyclone for building drainage. The helical single-blade cyclone for building drainage comprises a tee joint body, wherein the upper interface of a main pipe of the tee joint body is connected with an upper connecting pipe section for connecting an upper stand pipe, the lower interface of the main pipe of the tee joint body is connected with a lower connecting pipe section for connecting a lower stand pipe, a helical guide blade is arranged on the inner wall of the lower connecting pipe section, and an inwards-flanging arc guide edge is arranged on the inner wall of the bottom of the upper connecting pipe section. According to the helical single-blade cyclone for building drainage, good wall-attached flows can be formed during large displacement through the cooperation of the inwards-flanging arc guide edge and the helical guide blade, the phenomenon of hydraulic jumping and the phenomenon that the blade is directly flushed are avoided, good ventilating effect is achieved, pressure fluctuation can be reduced and the water drainage capability is improved; and the single helical guide blade can prevent multi-blade multi-flow convergence, the water flow falling speed is lowered, the noise is lowered, the odor of the toilet is avoided and the drainage capability is improved.
Owner:上海深海宏添建材有限公司
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