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A high-pressure cleaning device for a felt for papermaking
ActiveCN224351019UMachine wet end
The utility model discloses a kind of high-pressure cleaning devices of hair cloth for papermaking, it is related to papermaking technical field, and its technical solution main points include linear module, the slider of linear module is fixedly connected with base, base is provided with cleaning tank, cleaning tank is opened with cleaning port on the side close to hair cloth, the inside fixed connection of cleaning tank has support, multiple spray heads are installed on support, the nozzle of multiple spray heads are all towards hair cloth, the end of multiple spray heads far from hair cloth is respectively communicated with water supply pipe, multiple water supply pipes all penetrate cleaning tank, the inside rotation connection of cleaning tank has extruding roller, extruding roller and hair cloth resist contact;Water stream that spray head sprays passes through cleaning port and washes hair cloth in operation, most water is splashed back into cleaning tank, the rest part water is inhaled by hair cloth, water in hair cloth can be squeezed out by extruding roller, residual paper pulp fiber and other impurities can be together fallen into cleaning tank with squeezed water, and cleaning effect is better.
Owner:JIANGSU FUSHENG PAPER CO LTD
Apparatus for forming a substrate
Methods and apparatuses for producing a substrate are described. A method and apparatus for introducing a component into a fluid supply is also presented. A method can include providing a first fluid supply. The fluid supply can be configured as a foam in some embodiments. The method can also include providing a component feed system and a supply of the component. The method can include introducing the component to a fluid supply in an eductor in some aspects. A resultant slurry including a fluid supply and the component can be transferred through a headbox. The resultant slurry can be dewatered to provide a substrate including the component.
Owner:KIMBERLY CLARK WORLDWIDE INC
A vacuum box sealing device for a papermaking vacuum roll
The utility model discloses a kind of papermaking vacuum roll vacuum box sealing device, belong to papermaking vacuum roll field, the upper end of vacuum box is equipped with sealing cover, the lower end of barrel is equipped with movable support, limiting baffle compatible with sealing cover, limiting baffle limits movable support to drop, limiting baffle is fixed on vacuum box by fastening bolt;First sealing cavity, second sealing cavity are sequentially opened from top to bottom between movable support, sealing cover and limiting baffle, first sealing support is connected in the cavity of first sealing cavity, first sealing support and movable support are filled with first sealing filler. Movable support extrusion makes sealing support and sealing filler closely combine, improve sealing reliability. Two sealing supports are respectively arranged in two sealing cavities, and sealing filler is filled between movable support and sealing cover, double sealing is formed, to prevent vacuum box internal negative pressure leakage. Sealing cover and vacuum box integration, enhance sealing performance at the connection of barrel.
Owner:SHANDONG YIXUAN PAPER CO LTD
Foam forming system with angled dividing lamella
PendingEP4766887A1Machine wet end
A process and system for foam forming webs is disclosed. The method includes depositing a first foamed suspension of fibers onto a forming surface while the forming surface is moving in order to form an embryonic web and depositing a second foamed suspension of fibers onto the embryonic web while the forming surface is moving in order to form another layer on the embryonic web. An angled end of the dividing lamella directs a flow of the second foamed suspension of fibers proximate the angled end of the dividing lamella substantially parallel to the forming surface.
Owner:KIMBERLY CLARK WORLDWIDE INC
Method and machine for producing a dry-laid fibrous web
The invention relates to a method and a machine for producing a fibrous web, preferably a tissue, paper, or cardboard web or a nonwoven web, including a low-water raw material preparation of cellulose-containing fibers, preferably fresh fiber pulp in the form of baled material and / or recycled fibers, in order to form individual fibers and / or fiber bundles, wherein the individual fibers and / or fiber bundles are shaped into a flat fiber fabric in an air flow on a forming belt using a dry forming method and are solidified; a fluid, preferably water and / or a water-additive mixture, is applied onto the fiber fabric, preferably the flat fiber fabric; and the fibrous web is dried. The invention is characterized in that an improved suction device (30) is provided having offset suction chambers (32.m.n).
Owner:VOITH PATENT GMBH
A modern paper machine for producing synthetic polymer-free rice paper
This invention relates to the field of Xuan paper production, specifically to a specialized modern papermaking machine for producing Xuan paper without synthetic polymers. The papermaking machine includes an interconnected pulp tank and headbox. Inside the headbox, a cylindrical wire cage with its lower part immersed in the pulp is rotatably mounted. As the cylindrical wire cage rotates, a loose, wet sheet is formed on the wire surface. An air compressor is located beside the pulp tank. A closed-loop long wire is located on one side of the cylindrical wire cage. The long wire is tangential to the outer wall of the cylindrical wire cage, forming a transfer bonding area. A peeling mechanism is provided in the transfer bonding area to transfer the wet sheet to the long wire. The peeling mechanism includes a peeling plate with a main air channel connected to the air compressor. One end of the peeling plate has a rubber cone plate with a peeling air channel, and the other end has a peeling water channel. A pressing mechanism is located at the upper end of the peeling plate. This invention enables continuous production of Xuan paper, fully preserving the core qualities of traditional Xuan paper. The wet sheet is transferred without damage or residue, exhibiting strong production stability and suitability for large-scale continuous production of Xuan paper.
Owner:CHINA XUAN PAPER +1
A dryer fabric cleaning device for papermaking
This utility model discloses a papermaking dry wire cleaning device, including a housing. An inlet and an outlet are respectively opened on both sides of the housing. Multiple bottom guide rollers are rotatably connected at equal intervals on the bottom side of the housing near the inlet, and multiple top guide rollers are rotatably connected at equal intervals on the top side of the housing near the inlet. The bottom and top guide rollers are arranged in an alternating pattern. Multiple airflow cleaning components are located inside the housing, between the bottom and top guide rollers. In this utility model, a housing, several bottom guide rollers, several top guide rollers, airflow cleaning components, and a high-pressure blower are provided. The bottom and top guide rollers are arranged in an alternating pattern inside the housing. The dry wire passes around the bottom and top guide rollers sequentially inside the housing, resulting in a longer travel path for the dry wire within the housing. During this process, impurities and dust on the surface of the dry wire are blown away by the airflow cleaning components, improving the cleaning effect.
Owner:HUBEI PROVINCE MINGFENG SPECIAL PAPER CO LTD
Treatment agent for macro stickies and treatment method for macro stickies
A main objective of the present invention is to provide a new technique for treatment of macro stickies. The present invention can provide a treatment agent for macro stickies, which contains one or two or more selected from an oily and fatty compound having a melting point of 50°C or lower, a polyvinyl alcohol having a cationic group, and a cationic compound used for positive conversion. The present invention can provide a treatment method for macro stickies, which uses the treatment agent for macro stickies, for a macro stickies-containing object.
Owner:KURITA WATER INDUSTRIES LTD
A white water treatment system for a paper machine wire press section spray water
PendingCN122166954AWater/sewage treatment by centrifugal separationMachine wet endWater useFiltration
The present application belongs to the field of papermaking industry water treatment and clean production, especially to a white water treatment system suitable for the spraying water of the wire section and press section of a paper machine, which comprises: a clean water pretreatment unit for high-precision filtration of clean water to remove suspended solids and particulate impurities in the water and ensure the cleanliness of the spraying water; a high-pressure liquid supply unit connected with the clean water pretreatment unit for pressurizing the pretreated clean water to ultrahigh pressure and secondary precision filtration to provide a stable high-pressure cleaning water source; a water quality stabilization unit connected with the high-pressure liquid supply unit for adding a compounded agent to the high-pressure spraying water and real-time regulation and control of the water quality to inhibit bacterial growth and scaling corrosion; and a partition spraying unit connected with the high-pressure liquid supply unit for ultrahigh-pressure precision cleaning of the forming wire and press felt of the wire section and press section of the paper machine. The present application provides a high-integration, recyclable, energy-saving and consumption-reducing spraying water white water treatment system.
Owner:JIANGSU LEE & MAN PAPER MFG
A new type of annular printing screen
ActiveCN224363122UMachine wet end
The utility model relates to papermaking field discloses a novel annular printing screen plate, including filter screen, the inside sliding of filter screen is provided with support net, the inside fixed setting of support net has support shaft, support shaft front end fixed setting has bearing, the fixed establishment is connected with bearing periphery threadedly, the support net includes net cylinder, the net cylinder front end and rear end four equal division department are respectively provided with half thread round hole, eight half thread round holes all have connected mechanism, the connected mechanism includes stress column, the upper end fixed setting of stress column has support column, the periphery fixed setting of stress column upper end support column has spring. In the utility model, the connection of filter screen and support net improves the water leakage mode of filter screen, reduces the flaw of paper, and the cooperation of fixed mechanism, support shaft and connected mechanism can connect and disconnect filter screen and support net by rotating fixed mechanism, improves the installation and removal efficiency of filter screen.
Owner:SUZHOU QINJIE HYDRAULIC TECHNOLOGY CO LTD
System and method for mixing a processing medium into a slurry
A system for mixing a treatment medium into a slurry includes: a mixer configured to mix the slurry and the treatment medium; a plurality of walls defining a plurality of channels; a slurry source fluidly coupled to each of the channels; and a treatment medium source providing a portion of the treatment medium to each of the channels. The mixer includes a mixing chamber, a mixer inlet fluidly coupled upstream of the mixing chamber, and a mixer outlet fluidly coupled downstream of the mixing chamber. Each of the channels is fluidly coupled to the mixer inlet. The slurry source provides a portion of the slurry to each of the channels. Each of the channels provides that portion of the slurry and that portion of the treatment medium to the mixer inlet.
Owner:VALMET AB
Packaging paper headbox
The utility model discloses a package paper flow slurry box, it is in order to solve the problem that the even slurry roller cannot be cleaned in time after the device of existing flow slurry box is finished, and the flow slurry box includes flow slurry box body, water tank, first connecting pipeline and cleaning assembly etc. part, and the first motor is started and drives the rotation of first threaded rod, and the sliding frame is moved linearly above first threaded rod and first sliding rod through the rotation of first threaded rod, and the second connecting pipeline moves up and down in the inside of flow slurry box body, and the water pump is started and makes the cleaning fluid in water tank transport to connecting hose through first connecting pipeline, and the cleaning fluid is transported to second connecting pipeline through connecting hose, and then the cleaning fluid is sprayed out through the spray head, can move second connecting pipeline to the place needing cleaning after the device is finished and clean the inside of flow slurry box, can ensure its surface smooth, make the pulp flow in and out of the eyelet can receive even shrinkage and diffusion, let the fiber evenly disperse in the pulp flow.
Owner:GUANGXI FANGSHENG PAPER CO LTD
Roller with a reference to its intended use as a counter roller in a shoe press
Roller (1) with a cover (1.2) made of flexible material, which is intended to be used as a counter roller in a shoe press for dewatering a fibrous web (4), wherein the shoe press comprises a press shoe (2), a press jacket (3) and at least one felt (5), and wherein the press shoe has an effective press shoe width of |AA'|, characterized in that the cover (1.2) has an effective roll reference width of |BB'|, and wherein |AA'| > |BB'|, and wherein an undersize |AA'| - |BB'| of the effective roll reference width |BB'| relative to the effective press shoe width |AA'| is in a range of 10 mm to 50 mm, and wherein the undersize |AA'| - |BB'| of the effective roll reference width |BB'| relative to the effective press shoe width |AA'| is distributed on both sides of the roll (1), such that a first one-sided undersize |AB| is arranged on a first side of the roll, and a second one-sided undersize |A'B'| is arranged on a second side of the roll.
Owner:VOITH PATENT GMBH
Sheet manufacturing apparatus and sheet manufacturing method
A sheet manufacturing apparatus including an accumulation unit that accumulates fibers to form a web, a first transport unit that transports the web from the accumulation unit, a second transport unit that transports the web from the first transport unit, and a manufacturing unit that manufactures a sheet from the web transported by the second transport unit, in which in a case where manufacturing of the sheet is stopped, between the first transport unit and the second transport unit, the web is cut into an upstream web and a downstream web, the upstream web is collected, and the sheet is manufactured from the downstream web.
Owner:SEIKO EPSON CORP
A high-temperature resistant honeycomb core material paper, its preparation method and application
PendingCN122082292Astable jobImproved performance against UV agingNatural cellulose pulp/paperPaper/cardboard articlesFiberPolymer science
This invention discloses a high-temperature resistant honeycomb core paper, its preparation method, and its application. The paper has a three-layer composite structure, including two outer layers and an intermediate layer. The two outer layers are identical in composition, consisting of high-temperature resistant chopped fibers and high-temperature resistant resin. The intermediate layer, located between the two outer layers, comprises high-temperature resistant micro / nano fibers, high-temperature resistant pulp fibers, high-temperature resistant chopped fibers, and high-temperature resistant resin. The high-temperature resistant micro / nano fibers are fibrillated PBO fibers. The high-temperature resistant pulp fibers are PBO pulp fibers. The mass ratio of the high-temperature resistant micro / nano fibers, high-temperature resistant pulp fibers, and high-temperature resistant chopped fibers is 3–15:15–35:50–75. Through material structure design, this invention effectively improves the paper's high-temperature resistance (>250℃) and UV aging resistance.
Owner:ZHUZHOU TIMES FIBER PIONEER MATERIAL TECH CO LTD
Particle feeder for foam forming
A process and system for adding particulate material to a stream of foam into a headbox. A particulate material feeder includes a supply chamber that can be filled with particulate material, a supply hopper, and a gas lock valve disposed between the supply chamber and the supply hopper. When the gas lock valve is open, particulate material in the supply chamber can flow into the supply hopper. A pressure supply line is coupled to the supply chamber and is configured for air to flow into and / or out of the supply chamber.
Owner:KIMBERLY CLARK WORLDWIDE INC
A cloth pulp feeding control device for insulating paperboard production and a regulating system thereof
ActiveCN118498106BMachine wet end
The application relates to the technical field of insulating paperboard and discloses a cloth pulp feeding control equipment for insulating paperboard production, which comprises a base, a feeding box, a cloth pulp distributor and a flow guide hose, the feeding box is fixedly connected to the top side wall of the base, the cloth pulp distributor is fixedly connected to the middle side wall of the base, the flow guide hose is fixedly connected between the feeding box and the cloth pulp distributor in an annular array, the inside of the feeding box is provided with a feeding assembly for uniformly feeding paper pulp, the elastic effect of the first spring makes the piston baffle block a certain amount of material, the purpose of automatic quantitative feeding is achieved, the problem that the material is blocked when too much material is fed into the cloth pulp distributor is avoided, in addition, the load of an internal stirring device of the cloth pulp distributor is further reduced, damage caused by long-time load work of the stirring device can be avoided, the uniformity of material mixing in the cloth pulp distributor is improved, and the service life of the stirring device is guaranteed.
Owner:TAIZHOU XINYUAN ELECTRICAL EQUIP
A method of making a solid electrolytic capacitor paper
The application relates to the technical field of pulping and papermaking, and provides a preparation method of solid-state electrolytic capacitor paper, which comprises the following steps: S100, respectively preparing A slurry and B slurry, adopting wet papermaking to perform multi-layer forming on the A slurry and the B slurry, and obtaining a multi-layer wet paper sheet; S200, performing pressing treatment and drying treatment on the multi-layer wet paper sheet, and obtaining the solid-state electrolytic capacitor paper. According to the application, the A slurry and the B slurry are respectively prepared and wet papermaking is performed to form a multi-layer structure with different pore diameters, the layer with a larger pore diameter has better connectivity, the resistance of precursor liquid entering is reduced, and the entering speed is accelerated; the layer structure with a relatively small pore diameter is more uniform, which is beneficial to intercepting burrs and improving pressure safety, and is also beneficial to redistributing and homogenizing the precursor liquid in the thickness direction, and reducing local enrichment or local loss.
Owner:XIANHE CO LTD
Super high vacuum box dewatering device for long wire paper machines
ActiveCN224351020UMachine wet end
The utility model discloses a long -net paper machine is with superhigh vacuum tank dewatering device, it is in solving traditional vacuum couch roll energy consumption high, the problem of low dewatering efficiency. The device includes the dehydration tank body of top surface opening, is equipped with the seal of section "L" shape on its top surface, and the vertical part of seal is inlaid into the box with the box inner wall adhesion, and the horizontal part outside is grooved and is built -in air bag, and can dynamic compensation paper width fluctuation, and the height adjustment is realized to the end of tank body through right angle support board cooperation support lead screw, and the support intensity is enhanced to triangular plate, and the inside of tank body is divided into a plurality of chambers, and negative pressure pipe branch pipe is connected with each chamber to control vacuum degree independently, and is equipped with drainage pipe and drainage valve in the bottom. The utility model discloses through adopting above -mentioned structure, relies on the elastic compensation of L shape seal and air bag, and the adjustable support structure of partition vacuum control, makes vacuum degree fluctuation effectively drop, and energy consumption reduces 10% in unit output, and paper page dryness improves, is applicable to long -net paper machine energy -efficient dewatering, promotes papermaking industry green transformation.
Owner:DANGYANG CITY JINZHUANG CHEM IND CO LTD
Radial pulp distributor with centrifugal degassing function
The application relates to a radial pulp distributor with a centrifugal degassing function and relates to the field of papermaking equipment. The pulp distributor comprises a pulp distribution cylinder, a cover body fixed to the top of the cylinder, a cylinder coaxially arranged at the center of the bottom end of the interior, a spiral flow guide plate, a feeding pipe and a plurality of discharging pipes. The spiral flow guide plate is connected between the inner wall of the cylinder and the outer wall of the cylinder and extends from bottom to top, and jointly forms a spiral channel; the feeding pipe is communicated with the lower half of the cylinder, is connected in a tangent direction and is communicated with the bottom inlet of the spiral channel; the discharging pipes are uniformly distributed on the upper half of the cylinder, and a degassing port is arranged on the cover body. The application realizes gas-liquid separation by utilizing the centrifugal force generated by the fluid kinetic energy of the pulp itself through the bottom oblique cutting feeding and the internal spiral channel, integrates the centrifugal degassing and the pulp distribution in situ, eliminates the huge front independent degassing equipment and the additional mechanical power, effectively shortens the flow pipe, saves the floor area and reduces the overall energy consumption of the system.
Owner:HANGZHOU PROJECT & RES INST OF ELECTRO MECHANIC & LIGHT IND
System and process for foam recovery
A system and process are disclosed for forming nonwoven webs from a foam and fiber suspension. After the web is formed, excess foam is collected and reused. The reclaimed foam is combined with further amounts of fiber at a high consistency. The high consistency fiber and foam mixture is defiberized without causing excessive foaming. The defiberized foam and fiber mixture is then diluted and fed back to a headbox for forming the nonwoven web.
Owner:KIMBERLY CLARK WORLDWIDE INC
A wood pulp fiber conveying and dispensing apparatus
ActiveCN224338011UEffectively adjust distribution statussmall fluctuationMachine wet endRaw material divisionFiberPulp and paper industry
The utility model discloses a wood pulp fiber conveying distribution device, including at least one's first rubbing crusher or second rubbing crusher, wherein, first rubbing crusher or second rubbing crusher is connected with first channel or second channel respectively, first channel or second channel is connected to extension channel through connecting channel, wherein, extension channel is connected to air supplement channel. The utility model is directly sent to the web former of wood pulp all to the net belt, and unlike the wood pulp forming device of filter screen structure of previous adoption has the non - constant wood pulp return process, thereby greatly reduced the fluctuation of wood pulp amount with time of sending out, can effectively adjust the distribution state of wood pulp in the export width direction before wood pulp reaches wood pulp channel export, even if wood pulp channel export is rubbing crusher export width ratio reaches 1:3 still can obtain the wood pulp flow that is evenly distributed and continuously stably sent along the width direction in the export, effectively solved the width requirement of non - woven fabric, avoided the distribution difference problem when the width of multiple rubbing crusher is parallel.
Owner:SHANGHAI TAICIKANG IND CO LTD +1
Wire unit of a wire section of a machine for producing a fibrous material web
PCT designated stageWO2026124884A1Machine wet end
The invention relates to a wire unit (1) of a wire section of a machine for producing a fibrous web, having a wire (2) which functions as a lower wire, the wire unit comprising at least two suction zones, in each of which a negative pressure can be built up, and at least two suction boxes (3, 4), the at least two suction zones being arranged in the at least two suction boxes, and the wire unit comprising a control device (5). At least one suction box (3) comprises exactly one suction zone and is movable so that said at least one suction box can be moved into a first position and into a second position, said at least one suction box being able to suction the wire when in the first position and not being able to suction the wire when in the second position. The control device is designed such that it can move the at least one movable suction box into the first position and into the second position and can activate and deactivate the negative pressure in the suction zone of said suction box.
Owner:VOITH PATENT GMBH
Method for manufacturing paperboard comprising a bulk ply
A method for manufacturing paperboard in a paper-making machine, the method comprising the step of: forming a bulk ply by applying a pulp suspension comprising at least 50 wt% (based on the total dry weight of the pulp suspension) of high-bulk softwood pulp and 0.01-10 wt% (based on the total dry weight of the pulp suspension) of a strength enhancement agent selected from the group consisting of highly refined cellulose, microfibrillated cellulose (MFC), a cationic strength additive, an anionic strength additive, or a combination thereof, from a headbox onto a moving wire to form a wet web, at least partially dewatering the wet web on the wire to obtain an at least partially dewatered web, and drying the at least partially dewatered web to obtain the bulk ply; wherein the wire is provided with a wire shaker which shakes the wire at frequency of 100-600 strokes per minute and a stroke length of 5-35 mm.
Owner:STORA ENSO OYJ
Forming screen with unperforated longitudinal strips
PendingEP4758293A1Machine wet end
Owner:VOITH PATENT GMBH
Industrial multilayer fabric
PendingEP4756120A1Machine wet endMulti-ply fabrics
The first binding warp forms a knuckle on the lower surface side weft on which one knuckle is formed by the adjacent lower surface side warp on the left side and forms a knuckle on the lower surface side weft on which one knuckle is formed by the adjacent lower surface side warp on the right side. The second binding warp forms a knuckle on the lower surface side weft on which one knuckle is formed by the adjacent lower surface side warp on the left side and forms a knuckle on the lower surface side weft on which one knuckle is formed by the adjacent lower surface side warp on the right side.
Owner:NIPPON FILCON CO LTD
System and method for monitoring an oscillating component
A sensor signal is generated from a plurality of sensors located on a sensing roll, wherein each signal is generated when each sensor enters a nip between the sensing roll and a mating roll during each rotation of the sensing roll. An oscillating component such as a doctor blade or cleaning shower affects a web of material upstream from the nip. Each sensor generates a sensor signal upon entering the nip. A periodically occurring starting reference is generated that is associated with each oscillation of the oscillating component and the signal generated by each sensor is received so that a particular one of the sensors which generated the signal is determined and one of a plurality of tracking segments associated with the oscillating component is identified. The signal is stored to associate the sensor signal with the identified one tracking segment.
Owner:INT PAPER CO
Method for cleaning paper machine components and cleaning apparatus used therefor
ActiveJP7882461B2Dryer sectionMachine wet end
[Problem] To sufficiently improve a cleaning effect of a papermaking machine component while being simple. [Solution] A papermaking machine component is at least one selected from the group consisting of: a wire (2); a felt (3); a press roll (4); a wet paper guide roll (10) for guiding wet paper (X1); a wire guide roll (20) for guiding the wire (2); a felt guide roll (30) for guiding the felt (3); a canvas (6) used when the wet paper (X1) is pressed against a dryer roll (5) at a dry part (P3); and a canvas guide roll (60) for guiding the canvas (6). While operating the papermaking machine component, cleaning water including hot water that is at least 60°C but less than 100°C or water vapor that is 100-200°C is linearly blown on the papermaking machine component from a cleaning water head (11). The distance between the papermaking machine component and an opening (11c) of the cleaning water head (11) is 0.1-30 mm.
Owner:MAINTECH
A method for treating and reusing papermaking white water
The present application belongs to the technical field of papermaking white water treatment, especially a papermaking white water treatment and reuse method. In view of the problems of low fiber and filler recovery efficiency, poor quality of reused materials, lack of cooperation among various treatment units, and unstable system operation in the existing papermaking white water treatment and reuse process, the following scheme is proposed, which includes the following steps: S1: online monitoring and characteristic analysis of papermaking white water; S2: gradient targeted flocculation pretreatment of white water; S3: pumping the pretreated white water into a partition-optimized multi-disc filter for dynamic filtration. The present application realizes multi-unit intelligent linkage and self-adaptive optimization of the whole process of white water treatment by constructing a closed-loop control system from online monitoring, intelligent decision-making to precise execution, significantly improves the recovery efficiency of fiber and filler and the quality of papermaking, realizes efficient hierarchical reuse of water resources and source reduction of pollutants, and achieves the unity of economic, environmental and social benefits.
Owner:JIANGSU LEE & MAN PAPER MFG
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