CN221219432U - Antifouling wall cloth and wall cloth cleaning device - Google Patents
Antifouling wall cloth and wall cloth cleaning device Download PDFInfo
- Publication number
- CN221219432U CN221219432U CN202323223350.8U CN202323223350U CN221219432U CN 221219432 U CN221219432 U CN 221219432U CN 202323223350 U CN202323223350 U CN 202323223350U CN 221219432 U CN221219432 U CN 221219432U
- Authority
- CN
- China
- Prior art keywords
- wall cloth
- layer
- cloth
- adhesive layer
- adhered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 106
- 238000004140 cleaning Methods 0.000 title claims abstract description 42
- 230000003373 anti-fouling effect Effects 0.000 title claims abstract description 24
- 239000010410 layer Substances 0.000 claims abstract description 55
- 239000012790 adhesive layer Substances 0.000 claims abstract description 30
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 210000001503 joint Anatomy 0.000 claims description 11
- 238000007598 dipping method Methods 0.000 claims description 8
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 2
- 238000009941 weaving Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Abstract
An antifouling wall cloth and a wall cloth cleaning device belong to the technical field of wall cloth. The antifouling wall cloth comprises a base cloth layer, wherein one side of the base cloth layer is adhered with a reinforcing layer, one side of the reinforcing layer is adhered with a waterproof layer, one side of the waterproof layer is adhered with a polytetrafluoroethylene coating, the other side of the base cloth layer is adhered with a buffer layer, one side of the buffer layer is adhered with a basic adhesive layer, and the periphery of one side of the basic adhesive layer is adhered with a strong adhesive layer. In the utility model, the periphery of the wall cloth adhered on the wall surface is adhered stably through the strong adhesive layer, so that the corner of the wall cloth is prevented from falling off, and the service life of the wall cloth is prolonged; the waterproof layer is used for improving the waterproof effect of the wall cloth; the elasticity and the comfort level of the wall cloth are improved through the buffer layer; the polytetrafluoroethylene coating is used for protecting the wall cloth, so that the adhesion of stains on the surface of the wall cloth is reduced, and the antifouling performance is good.
Description
Technical Field
The utility model belongs to the technical field of wall cloth, and particularly relates to an anti-fouling wall cloth and a wall cloth cleaning device.
Background
In building decoration, wallpaper is generally adopted as wall decoration material, and has the advantages of convenience, attractive appearance, economy and practicability, paper wallpaper is generally adopted, seamless wall cloth is one type of wall cloth, also called seamless wall cloth, and is designed according to the height of an indoor wall surface, and the wall cloth which can be integrally stuck according to the circumference of the indoor wall surface is generally called seamless wall cloth, and the width of the wall cloth is generally 2.7 meters to 3.10 meters.
In the prior art, publication No.: CN215106751U, which is a chinese summary of the utility model, discloses a flame-retardant and stain-resistant composite environmental protection wall cloth, comprising a wall cloth main body, wherein a top strip is arranged at the upper end of the wall cloth main body, a support strip is arranged at the bottom of one side of the top strip, an adhesive strip is arranged at one side of the support strip close to the wall cloth main body, a panel is arranged at the other side of the top strip, a scale mark is arranged at one side of the panel far from the top strip, an outer woven layer is arranged inside the wall cloth main body, an inner cotton layer is arranged at the inner side of the outer woven layer, and flame-retardant layers are arranged at the sides of the outer woven layer and the inner cotton layer far from each other; the wall cloth can effectively prevent the wall cloth main body from being stuck with wrinkles and skewed by arranging the top strip, the bonding strip, the supporting strip, the panel and the scale marks, thereby increasing the convenience of sticking the wall cloth main body; through setting up empty slot, bullet strip, dry ball and air vent, can reach elasticity and the dampproofing nature of increase wall cloth main part, can effectively avoid the wall cloth main part to wet inside moldy condition.
According to the technical scheme, the pasting efficiency and the dampproof effect of the wall cloth are improved, but the waterproof property and the antifouling property of the surface of the wall cloth are poor after the existing wall cloth is pasted on the surface of the wall, so that the wall cloth is easy to pollute, the indoor attractiveness is further reduced, and dust on the wall cloth is not easy to clean.
There is therefore a need to propose a new solution to the above-mentioned problems.
Disclosure of Invention
The utility model mainly solves the technical problems in the prior art and provides an antifouling wall cloth and a wall cloth cleaning device.
The technical problems of the utility model are mainly solved by the following technical proposal: the utility model provides an antifouling wall cloth, includes the base cloth layer, one side bonding of base cloth layer has the enhancement layer, one side bonding of enhancement layer has the waterproof layer, one side bonding of waterproof layer has polytetrafluoroethylene coating, the opposite side bonding of base cloth layer has the buffer layer, one side bonding of buffer layer has the basic adhesive linkage, bonding all around of basic adhesive linkage one side has powerful adhesive linkage.
Preferably, the buffer layer is formed by weaving weft yarns and warp yarns in a twill manner, the weft yarns and the warp yarns are elastic yarns, and the elastic yarns comprise nylon fibers serving as yarn cores and nylon fibers coated outside the yarn cores serving as coating layers.
Preferably, the thickness of the base adhesive layer is twice the thickness of the strong adhesive layer, and the strong adhesive layer is rectangular.
The utility model also provides a wall cloth cleaning device which comprises a holding component and the anti-fouling wall cloth, wherein the upper end of the holding component is hinged with a butt joint component, and a cleaning component for cleaning the anti-fouling wall cloth is hinged in the butt joint component.
Preferably, the holding assembly comprises a telescopic inner rod and a holding outer cylinder, the upper end of the telescopic inner rod is fixedly connected with a hinge rod, a plurality of mounting grooves are formed in the outer side of the telescopic inner rod at equal intervals, a first spring is fixedly connected in each mounting groove, a clamping block is fixedly connected to one end of each first spring, a clamping groove for clamping block embedding is formed in the upper end of the outer side of the holding outer cylinder, a limiting strip is arranged on the inner side of the holding outer cylinder, and a limiting groove for sliding connection of the limiting strip is formed in the outer side of the telescopic inner rod.
Preferably, the butt joint assembly comprises a first splice plate and a second splice plate, two first semicircular grooves are formed in one side of the first splice plate, two second semicircular grooves corresponding to the two first semicircular grooves are formed in one side of the second splice plate, the first semicircular grooves and the second semicircular grooves are spliced to form circular grooves, the first splice plate and the second splice plate are in bolt connection through a plurality of connecting bolts, and a hinge seat hinged to a hinge rod is fixedly connected to the other side of the first splice plate.
Preferably, the cleaning assembly comprises two rotating rods which are arranged up and down, two sides of each rotating rod are fixedly connected with positioning plates, a fixed block is fixed on one side, opposite to the positioning plates, of each rotating rod, the fixed blocks are connected through a second spring, a lug is fixedly connected to the other side, opposite to the positioning plates, of each rotating rod, and the positioning plates are connected with an ash dipping roller through the lug in a rotating mode.
The utility model has the beneficial effects that: in the utility model, the periphery of the wall cloth adhered on the wall surface is adhered stably through the strong adhesive layer, so that the corner of the wall cloth is prevented from falling off, and the service life of the wall cloth is prolonged; the waterproof layer is used for improving the waterproof effect of the wall cloth; the elasticity and the comfort level of the wall cloth are improved through the buffer layer; the polytetrafluoroethylene coating is used for protecting the wall cloth, so that the adhesion of stains on the surface of the wall cloth is reduced, and the antifouling performance is good. According to the utility model, the protruding length of the holding component is adjusted by adjusting the fit of the clamping blocks at different positions and the clamping grooves, so that the cleaning position of the cleaning component is adjusted, and the surface of the wall cloth at a higher position is cleaned conveniently; the butt joint subassembly dismouting is convenient, makes clean subassembly and grip the subassembly and can be 90 to be convenient for clean the wall cloth in the less gap of part, improved application scope, improved the practicality, it is convenient to be stained with grey roller dismouting simultaneously, is convenient for change.
Drawings
FIG. 1 is a schematic view of an anti-fouling wall cloth according to the present utility model;
FIG. 2 is a schematic view of a wall cleaning apparatus according to the present utility model;
FIG. 3 is a schematic view of a grip assembly of the present utility model;
FIG. 4 is a schematic view of a docking assembly of the present utility model;
Fig. 5 is a schematic view of a cleaning assembly of the present utility model.
In the figure: 1. a base cloth layer; 2. a reinforcing layer; 3. a waterproof layer; 4. a polytetrafluoroethylene coating; 5. a buffer layer; 6. a base adhesive layer; 7. a strong adhesive layer; 8. a grip assembly; 81. a telescopic inner rod; 82. a hinge rod; 83. a mounting groove; 84. a first spring; 85. a clamping block; 86. holding the outer cylinder; 87. a clamping groove; 88. a limit bar; 89. a limit groove; 9. a docking assembly; 91. a first splice plate; 92. a second splice plate; 93. a first semicircular groove; 94. a second semicircular groove; 95. a connecting bolt; 96. a hinge base; 10. a cleaning assembly; 101. a rotating rod; 102. a positioning plate; 103. a fixed block; 104. a second spring; 105. a bump; 106. an ash dipping roller; 107. the groove is rotated.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
Examples: an antifouling wall cloth, as shown in figure 1, comprises a base cloth layer 1, wherein one side of the base cloth layer 1 is adhered with a reinforcing layer 2, reinforcing ribs are arranged in the reinforcing layer 2, the reinforcing ribs are woven by aramid fibers, one side of the reinforcing layer 2 is adhered with a waterproof layer 3, one side of the waterproof layer 3 is adhered with a polytetrafluoroethylene coating 4, the other side of the base cloth layer 1 is adhered with a buffer layer 5, one side of the buffer layer 5 is adhered with a basic adhesive layer 6, and the periphery of one side of the basic adhesive layer 6 is adhered with a strong adhesive layer 7.
Through the setting of waterproof layer 3, waterproof layer 3 is the PU film to improve the water-proof effects of wall cloth. By arranging the polytetrafluoroethylene coating 4, the polytetrafluoroethylene material has the characteristics of excellent non-adhesion, moisture absorption and incombustibility, so that the adhesion of stains on the surface of the wall cloth is reduced, and the stain resistance is good. This wall cloth has good water-proof effects and anti-soil effect, can avoid the water stain to adhere to and leave the seal on the wall cloth to can avoid the spot adhesion on the wall cloth, improve the clean and tidy degree of wall cloth, thereby be convenient for the user wipe gently can erase the dust of attaching on the wall cloth, improve the cleaning performance to the wall cloth.
The strong adhesive layer 7 is an adhesive layer having a strong adhesive effect, and the base adhesive layer 6 is an adhesive layer having a general adhesive effect, that is, the adhesive effect is inferior to that of the strong adhesive layer 7. The thickness of the basic adhesive layer 6 is twice the thickness of the strong adhesive layer 7, the strong adhesive layer 7 is rectangular, and the stability of the wall cloth adhered to the wall surface is improved through the arrangement of the strong adhesive layer 7, so that the corner of the wall cloth is prevented from falling off, and the service life of the wall cloth is prolonged.
The utility model also provides a wall cloth cleaning device, as shown in fig. 2-5, which is used for cleaning the anti-fouling wall cloth and comprises a holding component 8, wherein the upper end of the holding component 8 is hinged with a butt joint component 9, and a cleaning component 10 used for cleaning the anti-fouling wall cloth is hinged in the butt joint component 9. The wall cloth surface of different heights is cleaned conveniently by the holding component 8, the butt joint component 9 is convenient for putting the cleaning component 10 into a small gap, the cleaning range is increased, the cleaning component 10 has a buffer effect, and the service life is prolonged.
The holding assembly 8 comprises a telescopic inner rod 81 and an outer holding cylinder 86, the upper end of the telescopic inner rod 81 is fixedly connected with a hinge rod 82, a plurality of mounting grooves 83 are formed in the outer side of the telescopic inner rod 81 at equal intervals, a first spring 84 is fixedly connected in each mounting groove 83, one end of each first spring 84 is fixedly connected with a clamping block 85, a clamping groove 87 for embedding the clamping block 85 is formed in the upper end of the outer holding cylinder 86, a limiting strip 88 is arranged in the inner side of the outer holding cylinder 86, and a limiting groove 89 for sliding connection of the limiting strip 88 is formed in the outer side of the telescopic inner rod 81. When the wall cloth cleaning device is used, the telescopic inner rod 81 is arranged in the object holding outer cylinder, and the clamping blocks 85 at different positions are embedded through the clamping grooves 87, so that the extending length of the holding assembly 8 is adjusted, and the wall cloth at different heights can be cleaned conveniently.
The docking assembly 9 comprises a first splice plate 91 and a second splice plate 92, wherein two first semicircular grooves 93 are formed in one side of the first splice plate 91, two second semicircular grooves 94 corresponding to the two first semicircular grooves 93 are formed in one side of the second splice plate, the first splice plate 91 and the second splice plate 92 are bolted through a plurality of connecting bolts 95, and a hinge seat 96 hinged to the hinge rod 82 is fixedly connected to the other side of the first splice plate 91. The first semicircular groove 93 and the second semicircular groove 94 are matched so as to facilitate the installation and the disassembly of the cleaning assembly 10, namely, the first semicircular groove 93 and the second semicircular groove 94 are spliced to form a circular groove, the circular groove is used for assembling a rotating rod 101 in the cleaning assembly 10, the rotating rod 101 is rotationally connected in the circular groove formed by splicing the first semicircular groove 93 and the second semicircular groove 94, and meanwhile, the cleaning assembly 10 is convenient to disassemble, and the cleaning assembly is simple in structure and convenient to maintain.
The cleaning assembly 10 comprises two rotating rods 101 which are arranged up and down, wherein two sides of each rotating rod 101 are fixedly connected with a locating plate 102, one side, opposite to the locating plate 102, of each rotating rod 101 is fixedly provided with a fixed block 103, the fixed blocks 103 on the same side are connected through a second spring 104, namely, two ends of the second spring 104 are respectively connected with the upper fixed block 103 and the lower fixed block 103, the other side, opposite to the locating plate 102, of each rotating rod 101 is fixedly connected with a lug 105, the locating plate 102 is rotatably connected with an ash dipping roller 106 through the lug 105, namely, two sides of the ash dipping roller 106 are provided with rotating grooves 107, and the lug 105 is embedded into the rotating grooves 107 and is rotatably connected with the rotating grooves 107; the dust-dipping roller 106 is convenient to assemble and disassemble, convenient to replace and convenient to maintain, and meanwhile, the two dust-dipping rollers 106 are connected through the second spring 104, so that the stability of the cleaning assembly 10 in use is improved, and the overlarge rotation range of the rotating rod 101 is avoided.
When the anti-fouling wall cloth is used, the anti-fouling wall cloth is adhered to a wall surface through the basic adhesive layer 6, the periphery of the wall cloth adhered to the wall surface is adhered stably through the strong adhesive layer 7, the corner of the wall cloth is prevented from falling off, and the service life of the wall cloth is prolonged; meanwhile, the polytetrafluoroethylene coating 4 protects the wall cloth, so that the wall cloth is prevented from being polluted by sewage and mud, and the polytetrafluoroethylene material has the characteristics of excellent non-adhesion, moisture absorption and incombustibility, is extremely stable to oxygen and ultraviolet rays, has excellent weather resistance, reduces adhesion of stains on the surface of the wall cloth, and has good anti-fouling performance.
When cleaning the wall cloth surface, the protruding length of the holding component 8 is adjusted by adjusting the fitting blocks 85 at different positions to fit with the clamping grooves 87, so that the cleaning position of the cleaning component 10 is adjusted, and then dust adhered to the wall cloth surface is adhered and removed by the two dust adhering rollers 106 in the cleaning component 10. The cleaning efficiency is improved by adopting two dust-dipping rollers 106; the hinge seat 96 in the butt joint assembly 9 is hinged with the hinge rod 82 in the holding assembly 8, so that the cleaning assembly 10 can be 90 degrees with the holding assembly 8, the wall cloth in the gap with a small part can be cleaned conveniently, the application range is improved, and the practicability is improved.
Finally, it should be noted that the above embodiments are merely representative examples of the present utility model. Obviously, the utility model is not limited to the above-described embodiments, but many variations are possible. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model should be considered to be within the scope of the present utility model.
Claims (7)
1. The utility model provides an antifouling wall cloth, includes base cloth layer (1), its characterized in that, one side of base cloth layer (1) bonds there is enhancement layer (2), one side of enhancement layer (2) bonds there is waterproof layer (3), one side of waterproof layer (3) bonds there is polytetrafluoroethylene coating (4), the opposite side of base cloth layer (1) bonds there is buffer layer (5), one side of buffer layer (5) bonds there is basic adhesive layer (6), the bonding all around of basic adhesive layer (6) one side has powerful adhesive layer (7).
2. An anti-fouling wall cloth according to claim 1, characterized in that the buffer layer (5) is formed by weaving weft yarns and warp yarns in twill, and the weft yarns and warp yarns are elastic yarns, and the elastic yarns comprise nylon fibers as yarn cores and nylon fibers coated outside the yarn cores as coating layers.
3. An anti-fouling wall cloth according to claim 1, characterised in that the thickness of the base adhesive layer (6) is twice the thickness of the strong adhesive layer (7), the strong adhesive layer (7) being arranged in a rectangular shape.
4. A wall cloth cleaning device, characterized by comprising a holding component (8) and the antifouling wall cloth according to any one of claims 1-3, wherein a butt joint component (9) is hinged at the upper end of the holding component (8), and a cleaning component (10) for cleaning the antifouling wall cloth is hinged in the butt joint component (9).
5. The wall cloth cleaning device according to claim 4, wherein the holding component (8) comprises a telescopic inner rod (81) and a holding outer cylinder (86), the upper end of the telescopic inner rod (81) is fixedly connected with a hinge rod (82), a plurality of mounting grooves (83) are formed in the outer side of the telescopic inner rod (81) at equal intervals, a first spring (84) is fixedly connected in each mounting groove (83), a clamping block (85) is fixedly connected to one end of the first spring (84), a clamping groove (87) for the clamping block (85) to be embedded is formed in the upper end of the outer side of the holding outer cylinder (86), a limiting strip (88) is arranged on the inner side of the holding outer cylinder (86), and a limiting groove (89) for the sliding connection of the limiting strip (88) is formed in the outer side of the telescopic inner rod (81).
6. The wall cloth cleaning device according to claim 4, wherein the butt joint assembly (9) comprises a first splice plate (91) and a second splice plate (92), two first semicircular grooves (93) are formed in one side of the first splice plate (91), two second semicircular grooves (94) corresponding to the two first semicircular grooves (93) are formed in one side of the second splice plate (92), the first semicircular grooves (93) and the second semicircular grooves (94) are spliced to form circular grooves, the first splice plate (91) and the second splice plate (92) are bolted through a plurality of connecting bolts (95), and a hinge seat (96) hinged to a hinge rod (82) is fixedly connected to the other side of the first splice plate (91).
7. The wall cloth cleaning device according to claim 4, wherein the cleaning assembly (10) comprises two rotating rods (101) which are arranged up and down, two sides of each rotating rod (101) are fixedly connected with positioning plates (102), one side, opposite to each side, of each positioning plate (102) on two sides of each rotating rod (101) is fixedly provided with a fixing block (103), the same side is connected with the fixing blocks (103) through a second spring (104), the other side, opposite to each side, of each positioning plate (102) on two sides of each rotating rod (101) is fixedly connected with a protruding block (105), and the positioning plates (102) are rotationally connected with dust-dipping rollers (106) through the protruding blocks (105).
Publications (1)
Publication Number | Publication Date |
---|---|
CN221219432U true CN221219432U (en) | 2024-06-25 |
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN221219432U (en) | Antifouling wall cloth and wall cloth cleaning device | |
CN108005328A (en) | A kind of automatically cleaning outer wall heat insulating and decorating plate | |
CN108824750A (en) | A kind of flame-proof abrasion-resistant PVC floor | |
CN208819551U (en) | A kind of anti-pollution LCD display easy to clean in open air | |
CN105942939B (en) | A kind of furring tile washer | |
CN110171234B (en) | Novel belt blackboard is used in teaching | |
CN207479050U (en) | A kind of LCD panel dust-extraction unit | |
CN216361335U (en) | LED street lamp with self-cleaning function | |
CN212562298U (en) | All-steel movable floor | |
CN113319949B (en) | Children furniture panel processingequipment | |
CN210295751U (en) | Be used for open air LED to lease screen | |
CN205752189U (en) | There is the photovoltaic module of self-cleaning function | |
CN213332492U (en) | Automatic clear ball valve | |
CN112897133A (en) | Winding equipment for building waterproof membrane | |
CN208721975U (en) | A kind of motion picture screen equipment | |
CN110301867B (en) | Public toilet automatic cleaning system and method based on smart city | |
CN212349570U (en) | Glue applying device for composite board machine | |
CN220681854U (en) | Scratch-resistant antistatic adsorptive release film | |
CN209240600U (en) | A kind of Combined detachable cellular board main body | |
CN208006370U (en) | A kind of multi-purpose waterproof paper tube | |
CN108580231A (en) | The plate furniture bottom coloring Coating technology that paint uses can be effectively reduced | |
CN106024994A (en) | Production technology of solar backboard easy to clean | |
CN113749026B (en) | Automatic shine web frame and cylinder mould | |
CN217079177U (en) | Butyl coiled material with high pollution resistance | |
CN211258293U (en) | Hidden switch ventilation window of glass curtain wall department |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant |