CN111794401A - Double-side defense anti-knock assembled wallboard - Google Patents
Double-side defense anti-knock assembled wallboard Download PDFInfo
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- CN111794401A CN111794401A CN202010817424.2A CN202010817424A CN111794401A CN 111794401 A CN111794401 A CN 111794401A CN 202010817424 A CN202010817424 A CN 202010817424A CN 111794401 A CN111794401 A CN 111794401A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
- E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Building Environments (AREA)
Abstract
A bilateral defense antiknock assembled wallboard belongs to the explosion-proof engineering. The two-side defense and anti-explosion assembled wallboard comprises an anti-explosion wallboard, an interlayer pressure-relief defense wallboard, a substrate, an L-shaped connecting plate, a clamping groove, an anti-explosion plate pressure-relief hole, an anti-explosion protective coating, a connecting ribbed plate, a connecting groove, an interlayer pressure-relief hole, an interlayer pressure-relief cavity, a fire-isolating and anti-explosion reinforced fiber net layer and built-in pressure-relief energy-dissipation fireproof cotton. The wallboard adopts a bilateral defense and anti-explosion mode, has strong anti-cracking and anti-explosion capability and high seepage-proofing capability, has certain anti-explosion impact capability while ensuring that the whole structure has certain strength, adopts an assembly mode, obviously simplifies the installation operation, has high assembly speed, is beneficial to promoting the industrialized process, has simpler construction and very convenient industrialized disassembly, and can absorb the explosion impact energy to the maximum extent.
Description
Technical Field
The invention belongs to the field of explosion-proof engineering, and particularly relates to a bilateral defense anti-explosion assembled wallboard.
Background
At present, along with the development of national economy, the assembly technology is a policy vigorously advocated by the national government, a large number of assembly products are built or constructed, meanwhile, the installation operation is obviously simplified, the assembly speed is high, the promotion of the industrial process is facilitated, the construction is simpler, the industrial splitting is very convenient, the assembly is easy, various flammable and explosive petrochemical products and the like at present are often caused by huge casualties and economic losses due to explosion, and in order to control the losses caused by fire and explosion to the maximum extent, an explosion-proof structure with good explosion-proof effect needs to be developed, particularly in military industrial bases such as storehouses, target yards, dormitories, ammunition storehouses, command posts, garages, oil depots, aircraft equipment rooms, temporary warehouses, explosive dismantling factories, chemical hospitals and inspection stations and various flammable and explosive petroleum products, often, huge casualties and economic losses are caused by explosion, and in order to control the losses caused by fire and explosion to the maximum extent, series of engineering works such as military safety explosion-proof structures, three-dimensional work explosion-proof structures, training base explosion-proof structures, field material warehouse explosion-proof structures, field camp explosion-proof structures, hazardous material warehouse explosion-proof structures, chemical plant explosion-proof structures, oil refinery explosion-proof structures, firecracker factory explosion-proof structures, storage warehouse explosion-proof structures, barracks explosion-proof structures and the like are necessary to be constructed. Aiming at the series of problems, the explosion-proof structure needs high crack resistance, strong impact resistance, can bear great impact pressure, has good explosion resistance, strong explosion resistance, high strength, great deformation capability and good buffer performance, can absorb energy generated by explosion impact to the maximum extent, can obviously control disasters generated by explosion, and can effectively play roles of fire prevention and explosion prevention.
At present, terrorist problems are fiercely raised internationally, and the prevention of terrorist explosion attacks is taken as a difficult task in all countries, the political form of China is relatively stable, but the same is not great, and in some special places such as oil depots, airports, train stations and the like, the personnel of vehicles entering and exiting need to be checked to prevent accidents, particularly, the huge damage caused by explosion is prevented, such as the protection of terrorist attacks in public areas, therefore, an explosion-proof structure capable of playing a role in protection needs to be developed so as to effectively protect the personal safety of terrorist personnel such as military polices and the like, particularly under the condition of terrorist explosion, the explosion-proof structure can be widely applied to the peripheral safety and defense, the search areas of explosives and prohibited products, ammunition compounds, personnel and material shelters, observation points and defense shooting places, Highway inspection station, border inspection station, etc.
Disclosure of Invention
In order to solve the technical problem that the assembled wallboard does not have an explosion-proof function, the invention provides a bilateral defense and explosion-proof assembled wallboard which comprises an explosion-proof wallboard, an interlayer pressure-relief defense wallboard, a base plate, an L-shaped connecting plate, a clamping groove, an explosion-proof plate pressure-relief hole, an explosion-proof protective coating, a connecting rib plate, a connecting groove, an interlayer plate pressure-relief hole, an interlayer plate pressure-relief cavity, a fire-isolating explosion-proof reinforced fiber net layer and built-in pressure-relief energy-dissipation fireproof cotton;
the upper end wall and the lower end wall of the interlayer pressure relief defense wallboard are fixedly connected with an anti-explosion wallboard, the anti-explosion wallboard is formed by connecting a substrate and L-shaped connecting plates positioned at two ends of a connecting side of the substrate, two ends of the connecting side of the substrate are provided with clamping grooves, the clamping grooves are positioned at the sunken positions of the L-shaped connecting plates, and a plurality of anti-explosion plate pressure relief holes are formed in the upper surface and the lower surface of the substrate;
the upper and lower both ends wall of intermediate layer pressure release defense wallboard is equipped with connection rib plate, connecting groove has been seted up to the upper and lower both ends wall of intermediate layer pressure release defense wallboard, and connecting groove is located connection rib plate's depressed part, the central point department level of putting of intermediate layer pressure release defense wallboard inner chamber is provided with the equidistant intermediate layer board pressure release chamber of a plurality of, the central point department of putting of a plurality of intermediate layer board pressure release chamber transversely pegs graft and has separate the explosion-proof reinforcing fiber net layer of fire, and separate the explosion-proof reinforcing fiber net layer of fire and run through every intermediate layer board pressure release chamber, every it has built-in pressure dissipation flameproof cotton to fill in the intermediate layer board pressure release chamber, the surface of intermediate layer pressure release defense wallboard is provided with a plurality of intermediate layer board pressure release hole from top to bottom, intermediate layer board pressure release hole closely links to.
Preferably, the built-in pressure-relief energy-dissipation fireproof cotton is made of rock wool.
Preferably, the base plate, the L-shaped connecting plate and the interlayer pressure relief defense wallboard are all made of anti-explosion steel fiber added high-strength concrete.
Preferably, the fire-proof and explosion-proof reinforced fiber net layer is made of explosion-proof polypropylene fibers, circular meshes are arranged on the outer wall of the fire-proof and explosion-proof reinforced fiber net layer, and the aperture of each mesh is mm.
Preferably, L shape connecting plate and connecting groove looks joint, and L shape connecting plate matches each other with connecting groove's size of a dimension, the connection floor is connected with the draw-in groove looks joint, and the size of a dimension of connection floor and draw-in groove matches each other.
Preferably, the explosion-proof protective coating adopts high polymer paint.
Preferably, the sandwich plate pressure relief holes and the blast resistant plate pressure relief holes are aligned one to one.
Preferably, the outer wall of the anti-explosion wallboard is coated with an anti-explosion protective coating.
Has the advantages that: the wallboard adopts a double-side defense and anti-explosion mode, has strong anti-cracking and anti-explosion capacity and high anti-seepage capacity, has certain anti-explosion impact capacity while ensuring that the whole structure has certain strength, adopts an assembly mode, obviously simplifies the installation operation, has high assembly speed, is favorable for promoting the industrialized process, is simpler in construction, is very convenient for industrialized disassembly, can absorb the explosion impact energy to the maximum extent, and effectively plays roles of fire prevention and explosion prevention simultaneously, has the capacity of absorbing the energy generated by explosion while ensuring that the wallboard structure has the strength, has reasonable stress of the whole structure and high efficiency in resisting the explosion impact, can effectively avoid the condition that the structure is unstable due to the increase of local stress caused by the explosion on the wallboard structure, can reduce the damage action of the explosion on the wallboard structure, and has the obvious double functions of heat insulation and fire insulation due to the adoption of the built-in pressure-relief and energy dissipation fireproof cotton made of rock, the explosion-proof and fire-proof performance of the invention is obviously improved, and the plurality of pressure relief holes and the pressure relief cavity of the sandwich plate designed by the invention can be communicated with each other, and the fire-insulating explosion-proof reinforced fiber mesh layer arranged in a matching way can jointly dissipate the explosion impact energy and greatly dissipate the explosion impact energy.
Drawings
FIG. 1 is a front view of a double-sided defensive blast resistant assembled wall panel of the invention;
FIG. 2 is a side view of the double-sided defensive blast resistant assembled wall panel of the present invention;
FIG. 3 is a schematic structural view of an antiknock wallboard in the double-sided defensive antiknock assembled wallboard of the present invention;
FIG. 4 is a schematic structural view of a sandwich pressure relief defensive wallboard in the double-sided defensive and antiknock assembled wallboard of the invention.
In the figure: 1 is an anti-knock wallboard; 1-1 is a substrate; 1-2 is an L-shaped connecting plate; 1-3 are clamping grooves; 1-4 are pressure relief holes of the anti-explosion plate; 1-5 is an explosion-proof protective coating; 2 is a sandwich pressure relief defensive wallboard; 2-1 is a connecting rib plate; 2-2 is a connecting groove; 2-3 is a sandwich plate pressure relief hole; 2-4 is a pressure relief cavity of the sandwich plate; 2-5 is a fire-proof and explosion-proof reinforced fiber net layer; 2-6 are built-in pressure relief energy dissipation fireproof cotton.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1-4, the invention provides a double-side defense and anti-explosion assembled wallboard, which comprises an anti-explosion wallboard 1, an interlayer pressure-relief defense wallboard 2, a substrate 1-1, an L-shaped connecting plate 1-2, a clamping groove 1-3, an anti-explosion plate pressure-relief hole 1-4, an anti-explosion protective coating 1-5, a connecting ribbed plate 2-1, a connecting groove 2-2, an interlayer plate pressure-relief hole 2-3, an interlayer plate pressure-relief cavity 2-4, a fire-isolating and anti-explosion reinforced fiber net layer 2-5 and a built-in pressure-relief energy-dissipation fireproof cotton 2-6;
the upper end wall and the lower end wall of the interlayer pressure relief defense wallboard 2 are fixedly connected with an anti-explosion wallboard 1, the anti-explosion wallboard 1 is formed by connecting a substrate 1-1 and L-shaped connecting plates 1-2 positioned at two ends of a connecting side of the substrate 1-1, two ends of the connecting side of the substrate 1-1 are provided with clamping grooves 1-3, the clamping grooves 1-3 are positioned at the sunken parts of the L-shaped connecting plates 1-2, and the outer surface of the substrate 1-1 is provided with a plurality of anti-explosion plate pressure relief holes 1-4 from top to bottom;
the sandwich type pressure relief and defense wall board is characterized in that connecting ribbed plates 2-1 are arranged on the upper end wall and the lower end wall of the sandwich type pressure relief and defense wall board 2, connecting grooves 2-2 are formed in the upper end wall and the lower end wall of the sandwich type pressure relief and defense wall board 2, the connecting grooves 2-2 are located in the sunken positions of the connecting ribbed plates 2-1, a plurality of sandwich plate pressure relief cavities 2-4 which are equidistant are horizontally arranged at the central position of the inner cavity of the sandwich type pressure relief and defense wall board 2, fire-isolating explosion-proof reinforced fiber net layers 2-5 are transversely inserted at the central positions of the plurality of sandwich plate pressure relief cavities 2-4, each sandwich plate pressure relief cavity 2-4 is filled with built-in pressure relief and explosion-proof cotton 2-6, a plurality of sandwich plate pressure relief holes 2-3 are formed in the outer surface of the sandwich type pressure relief and defense wall board 2, the sandwich plate pressure relief holes 2-3 are tightly connected with the anti-explosion plate pressure relief holes 1-4 and are communicated with each other.
As a further improvement of the invention, the built-in pressure-relief energy-dissipation fireproof cotton 2-6 is made of fireproof cotton made of rock wool.
As a further improvement of the invention, the base plate 1-1, the L-shaped connecting plate 1-2 and the interlayer pressure relief defense wallboard 2 are all made of explosion-proof steel fiber added high-strength concrete.
As a further improvement of the invention, the fire-proof and explosion-proof reinforced fiber net layer 2-5 is made of explosion-proof polypropylene fibers, and the outer wall of the fire-proof and explosion-proof reinforced fiber net layer 2-5 is provided with circular meshes with the aperture of 1.6-2.8 mm.
As a further improvement of the invention, the L-shaped connecting plate 1-2 is clamped with the connecting groove 2-2, the L-shaped connecting plate 1-2 is matched with the connecting groove 2-2 in size, the connecting ribbed plate 2-1 is clamped with the clamping groove 1-3, and the connecting ribbed plate 2-1 is matched with the clamping groove 1-3 in size.
As a further improvement of the invention, the explosion-proof protective coatings 1-5 adopt high polymer coatings.
As a further improvement of the invention, the sandwich plate pressure relief holes 2-3 and the blast-resistant plate pressure relief holes 1-4 are aligned one by one.
As a further improvement of the invention, the outer wall of the anti-explosion wallboard 1 is coated with anti-explosion protective coatings 1-5.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a two side defence antiknock equipment wallboard which characterized in that: the fireproof and fireproof composite board comprises an anti-explosion wallboard (1), an interlayer pressure-relief defense wallboard (2), a base plate (1-1), an L-shaped connecting plate (1-2), a clamping groove (1-3), an anti-explosion board pressure-relief hole (1-4), an anti-explosion protection coating (1-5), a connecting rib plate (2-1), a connecting groove (2-2), an interlayer board pressure-relief hole (2-3), an interlayer board pressure-relief cavity (2-4), a fire-isolating and anti-explosion reinforced fiber mesh layer (2-5) and built-in pressure-relief energy-dissipation fireproof cotton (2-6);
the upper end wall and the lower end wall of the interlayer pressure relief defense wallboard (2) are fixedly connected with an anti-explosion wallboard (1), the anti-explosion wallboard (1) is formed by connecting a base plate (1-1) and L-shaped connecting plates (1-2) positioned at two ends of a connecting side of the base plate (1-1), two ends of the connecting side of the base plate (1-1) are provided with clamping grooves (1-3), the clamping grooves (1-3) are positioned at the sunken parts of the L-shaped connecting plates (1-2), and a plurality of anti-explosion plate pressure relief holes (1-4) are formed in the upper surface and the lower surface of the base plate (1-1);
the upper end wall and the lower end wall of the interlayer pressure-relief defense wallboard (2) are provided with connecting ribbed plates (2-1), the upper end wall and the lower end wall of the interlayer pressure-relief defense wallboard (2) are provided with connecting grooves (2-2), the connecting grooves (2-2) are positioned at the sunken parts of the connecting ribbed plates (2-1), the central position of the inner cavity of the interlayer pressure-relief defense wallboard (2) is horizontally provided with a plurality of equidistant interlayer plate pressure-relief cavities (2-4), the central positions of the interlayer plate pressure-relief cavities (2-4) are transversely inserted with fire-insulating explosion-proof reinforced fiber net layers (2-5), the fire-insulating explosion-proof reinforced fiber net layers (2-5) penetrate through each interlayer plate pressure-relief cavity (2-4), and energy-dissipation and fireproof cotton (2-6) are filled in each interlayer plate pressure-relief cavity (2-4), a plurality of interlayer plate pressure relief holes (2-3) are formed in the upper portion and the lower portion of the outer surface of the interlayer pressure relief defense wallboard (2), and the interlayer plate pressure relief holes (2-3) are tightly connected with the anti-explosion plate pressure relief holes (1-4) and are communicated with each other.
2. The double-sided defensive antiknock assembled wallboard of claim 1 wherein: the built-in pressure-relief energy-dissipation fireproof cotton (2-6) is made of rock wool.
3. The double-sided defensive antiknock assembled wallboard of claim 1 wherein: the base plate (1-1), the L-shaped connecting plate (1-2) and the interlayer pressure relief defense wallboard (2) are all made of anti-explosion steel fiber added high-strength concrete.
4. The double-sided defensive antiknock assembled wallboard of claim 1 wherein: the fire-proof and explosion-proof reinforced fiber net layer (2-5) is made of explosion-proof polypropylene fibers, circular meshes are arranged on the outer wall of the fire-proof and explosion-proof reinforced fiber net layer (2-5), and the aperture of each mesh is 1.6-2.8 mm.
5. The double-sided defensive antiknock assembled wallboard of claim 1 wherein: the L-shaped connecting plate (1-2) is connected with the connecting groove (2-2) in a clamping mode, the L-shaped connecting plate (1-2) is matched with the connecting groove (2-2) in size, the connecting rib plate (2-1) is connected with the clamping groove (1-3) in a clamping mode, and the connecting rib plate (2-1) is matched with the clamping groove (1-3) in size.
6. The double-sided defensive antiknock assembled wallboard of claim 1 wherein: the explosion-proof protective coating (1-5) adopts high polymer coating.
7. The double-sided defensive antiknock assembled wallboard of claim 1 wherein: the sandwich plate pressure relief holes (2-3) and the anti-explosion plate pressure relief holes (1-4) are aligned one by one.
8. The double-sided defensive antiknock assembled wallboard of claim 1 wherein: the outer wall of the anti-explosion wallboard (1) is coated with an anti-explosion protective coating (1-5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817424.2A CN111794401A (en) | 2020-08-14 | 2020-08-14 | Double-side defense anti-knock assembled wallboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817424.2A CN111794401A (en) | 2020-08-14 | 2020-08-14 | Double-side defense anti-knock assembled wallboard |
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| Publication Number | Publication Date |
|---|---|
| CN111794401A true CN111794401A (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010817424.2A Pending CN111794401A (en) | 2020-08-14 | 2020-08-14 | Double-side defense anti-knock assembled wallboard |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882545A (en) * | 2021-11-09 | 2022-01-04 | 中冶西北工程技术有限公司 | Explosion-proof wall structure and explosion-proof wall applying same |
| CN115095076A (en) * | 2022-08-09 | 2022-09-23 | 河北浩普新型建材有限公司 | Decorative explosion venting wallboard |
-
2020
- 2020-08-14 CN CN202010817424.2A patent/CN111794401A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882545A (en) * | 2021-11-09 | 2022-01-04 | 中冶西北工程技术有限公司 | Explosion-proof wall structure and explosion-proof wall applying same |
| CN115095076A (en) * | 2022-08-09 | 2022-09-23 | 河北浩普新型建材有限公司 | Decorative explosion venting wallboard |
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