CN216305009U - Rock wool insulation board structure and thermal insulation wall structure - Google Patents
Rock wool insulation board structure and thermal insulation wall structure Download PDFInfo
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- CN216305009U CN216305009U CN202122383414.5U CN202122383414U CN216305009U CN 216305009 U CN216305009 U CN 216305009U CN 202122383414 U CN202122383414 U CN 202122383414U CN 216305009 U CN216305009 U CN 216305009U
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- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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Abstract
The utility model relates to a rock wool heat-preservation plate structure and a heat-preservation wall structure, which comprise a rock wool layer, wherein an outer net rack structure is arranged on the outer side of the rock wool layer, the outer net rack structure adopts a double-layer net rack and comprises a first inner net rack and a first outer net rack respectively, the first inner net rack is arranged on the outer surface of the rock wool layer, the first outer net rack is arranged on the outer side of the first inner net rack through a first connecting wire, and the outer net rack structure is connected with the rock wool layer through abdominal wires or U-shaped wires. The rock wool heat preservation wall structure comprises a rock wool heat preservation plate structure, and further comprises a concrete layer and a mortar applying layer. The utility model is provided with the net rack structure, thereby greatly improving the tensile strength and compressive strength of the rock wool layer and the stability of the outer contour of the rock wool layer, fully utilizing the advantages of rock wool A-level heat-insulating materials, meeting the requirements of heat-insulating, fireproof and heat-insulating properties of the heat-insulating plate, being convenient to process, being capable of being pre-processed and then being conveyed to a construction site for construction, being convenient to construct and saving manpower and material resources.
Description
Technical Field
The utility model relates to a rock wool heat-insulation plate structure and a heat-insulation wall structure, and belongs to the technical field of building heat-insulation materials.
Background
With the requirements of energy conservation, environmental protection and establishment of conservation-oriented society, various building wall heat-insulating technologies and materials are continuously emerging. According to the fire-proof grade of a building, the external thermal insulation material of the external wall is divided into four grades, namely A grade, B1 grade, B2 grade and B3 grade. Wherein, the grade A is an inorganic material without a fire point and with a heat preservation effect, which is called as a non-combustible material; grade B1 is a fire retardant insulation material that, although it can ignite, will automatically extinguish when it leaves the fire source. The B2 grade is a combustible heat-insulating material, mainly comprising expanded polystyrene boards, extruded polystyrene boards, polystyrene particles and the like, and the material has low ignition point and can release a large amount of harmful gases in the combustion process; the B3 grade is a flammable thermal insulation material, and the thermal insulation material taking the polyphenyl foam as the main material is eliminated from the market of external wall thermal insulation materials at present.
Rock wool is used as an inorganic heat-insulating material, has excellent fireproof performance, cannot be ignited by fire per se, has a fireproof grade of A, but is of a layered loose structure, and has lower compression strength and tensile strength, wherein the tensile strength vertical to the surface is one of important indexes of rock wool products for external heat insulation of an external wall, and the low tensile strength causes poor wind pressure resistance when used as an external heat-insulating system of the external wall, so that the safety of the external heat-insulating system of the external wall is directly influenced; because the technical indexes such as tensile strength, shear strength and the like of the rock wool board are poor, the rock wool external heat insulation system which is wet-pasted has instability and potential safety hazard, so that the application of the rock wool which is independently used as a heat insulation material of a high-rise building at present is very limited. Particularly, after the country puts forward new requirements on external heat preservation and fire prevention, further improvement needs to be made on the rock wool board so as to meet the requirements of the current building industry on the rock wool board.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the rock wool heat preservation plate structure and the heat preservation wall structure which are simple in structure, convenient to operate, high in tensile strength, safe, reliable and good in heat preservation and fire resistance.
The technical scheme for solving the technical problems is as follows: the utility model provides a rock wool heated board structure, includes the rock wool layer, the outside on rock wool layer is equipped with outer rack structure, outer rack structure adopts double-deck rack, is first interior rack and first outer rack respectively, the rack sets up in the first surface position department on rock wool layer, first outer rack sets up through first connecting wire the outside of first interior rack, outer rack structure pass through abdominal cavity silk or U type silk with the rock wool layer is connected.
The utility model has the beneficial effects that: set up spatial grid structure in rock wool layer outside department, improved the tensile strength on rock wool layer, compressive strength and the stability of rock wool layer outline greatly, make full use of rock wool A level insulation material's advantage satisfies the requirement to heated board heat preservation fire prevention and thermal insulation performance. In addition, this heated board structure processing is convenient, can process in advance then carry to the job site carry on the construction can, construction convenience practices thrift manpower and materials.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the inboard on rock wool layer is equipped with interior rack structure, interior rack structure adopts individual layer rack or double-deck rack.
The beneficial effect who adopts above-mentioned further scheme is, can also set up individual layer rack or double-deck rack in the internal surface position department on rock wool layer, protects the rock wool layer on the one hand, and on the other hand further increases the tensile strength of rock wool heated board.
Further, net rack and the outer net rack of second in interior net rack structure includes the second, net rack setting is in the second the internal surface position department on rock wool layer, the outer net rack of second passes through the second connecting wire setting and is in the outside of net rack in the second.
Adopt above-mentioned further scheme's beneficial effect to be, the inboard on rock wool layer has also set up double-deck rack, and the internal surface on rock wool layer is close to the internal network rack, and the rock wool layer is protected, increases rock wool heated board's compressive strength, tensile strength and rock wool layer and concrete layer joint strength.
Further, the outer end and the outer frame structural connection of web silk, the inner of web silk stretches into in the rock wool layer, or stretch out the rock wool layer and with be located the frame structural connection of intranet.
Adopt above-mentioned further scheme's beneficial effect to be, through web connection spatial grid structure and rock wool layer, the web can be the internal surface that does not expose the rock wool layer, also can stretch out from the internal surface on rock wool layer, and the web that can also stretch out is direct with interior spatial grid structure, and interior spatial grid structure need not every to have respective web and rock wool layer to be connected.
Furthermore, the closed end of the U-shaped wire is connected with the outer net rack structure, and the end parts of two straight edges of the U-shaped wire are connected after respectively penetrating through the rock wool layer.
The adoption of the further scheme has the beneficial effects that the connection of the net rack and the rock wool layer can be realized by the abdominal wires, but the processed heat-insulation plate structure needs to be transported to a construction site, the abdominal wires are easy to loosen in the transportation process, the distance between the net rack, particularly the internal net rack, and the rock wool layer is influenced, and the tensile strength of the rock wool layer can be weakened; and the U type connecting wire can not only realize being connected of rack and rock wool layer, and its open end can be screwed up simultaneously and lock to the not hard up problem of transportation process abdominal wire has been solved.
Furthermore, the meshes of the first inner net rack are smaller than or equal to the meshes of the first outer net rack; the mesh of the second inner net rack is smaller than or equal to the mesh of the second outer net rack.
The beneficial effects of adopting above-mentioned further scheme are that, the surface on rock wool layer, surface are hugged closely respectively to first, second internal net frame, can squeeze tightly the rock wool layer and play the protection rock wool layer, damage the problem on rock wool layer when avoiding the pouring concrete, and internal net frame can play the effect that supports the protection rock wool layer, so its hole need not too much, and external net frame then need support the plastering mortar layer, so the hole will be intensive some, guarantees the plastering mortar layer stability.
The utility model also relates to a rock wool heat-insulating wall body structure, which comprises the rock wool heat-insulating plate structure, a concrete layer and a mortar coating layer, wherein the concrete layer is arranged on the inner side and/or the outer side of the rock wool heat-insulating plate structure, and the mortar coating layer is arranged on the outer side of the rock wool heat-insulating plate structure or the outer side of the concrete layer.
The utility model has the beneficial effects that: spatial grid structure supports the rock wool layer surface spacingly, rock wool layer tensile strength has not only been increased, it is not hard up still to avoid the rock wool layer to appear when the pouring concrete, rock wool layer is stable at the concrete placement in-process, spatial grid structure on the rock wool layer surface can also satisfy the requirement on plastering mortar layer, rock wool insulation panel structure has not only guaranteed the tensile strength of wall body, the wall body surface roughness, adopt incombustible A level insulation material rock wool board moreover, satisfy the dual requirement of national to external heat preservation fire prevention and thermal insulation performance completely.
Further, still including the location supporting component who is used for supporting inner formword, exterior sheathing, the location supporting component includes the bracing piece, rock wool layer and outer rack structure are passed to the outer end of bracing piece and are used for fixing a position the exterior sheathing, and its inner end is passed and is waited to pour into the concrete layer area and be used for fixing a position the inner formword.
The beneficial effect who adopts above-mentioned further scheme is that, the heat preservation wall structure need be strutted inside and outside template so that the pouring concrete layer, in order to can more stable support inside and outside template, so add the bracing piece between inside and outside template, the bracing piece passes the rock wool layer, supports inside and outside template respectively through the both ends of bracing piece, further spacing support is carried out to the internal surface of inside and outside template to satisfy the requirement of the stable support of inside and outside template.
Furthermore, an outer connecting piece connected with the outer net frame structure is arranged at the outer end of the supporting rod, and/or an inner connecting piece or a plug is arranged at the inner end of the supporting rod.
The adoption of the further scheme has the beneficial effects that the inner connecting piece and the outer connecting piece can be connecting plates, the outer connecting piece can be welded with the outer net rack structure, and the inner connecting piece can be welded with the inner net rack structure, so that the stability of the positioning support assembly is further ensured, and the positioning effect of the support rod is prevented from being influenced when a concrete layer is poured; in order to guarantee the stable support inside and outside template, the bracing piece adopts the great metal material of intensity more, if the tip of bracing piece directly exposes in the outside, exposes the problem that can appear the corrosion for a long time, can adopt if the end cap of rubber material, the end cap has rust protection, avoids appearing corrosion phenomenon on the interior wall of long-time back heat preservation wall structure of using, keeps the pleasing to the eye effect of wall.
Further, the thickness of the plastering mortar layer is 20-30 mm.
The beneficial effect with above-mentioned further scheme is that, both can satisfy the appearance pleasing to the eye, can protect rock wool layer insulation material, and the mortar layer of smearing simultaneously can not be too thick, otherwise the wall body surface ftractures easily, still can increase the construction cost of wall body, can also improve the tensile strength of the outer heated board of rock wool through the mortar layer of smearing on outer grid structure to solve the heat retaining instability of rock wool and the problem of potential safety hazard.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic view of the positioning structure of the inner and outer forms in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a rock wool heat-insulating wall structure according to embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of another solid rock wool thermal insulation wall structure according to the present invention;
FIG. 5 is a schematic structural view of example 2 of the present invention;
FIG. 6 is a schematic structural view of a rock wool heat-insulating wall structure according to embodiment 2 of the present invention;
FIG. 7 is a schematic structural view of example 3 of the present invention;
FIG. 8 is a schematic structural view of example 4 of the present invention;
FIG. 9 is a schematic view of the positioning structure of the inner and outer forms in embodiment 4 of the present invention;
fig. 10 is a schematic structural view of an insulation wall structure according to embodiment 4 of the present invention;
in the figure, 1, rock wool layer; 2. a first inner net frame; 3. a first outer net frame; 4. a first connecting wire; 5. abdominal silks; 6. u-shaped wires; 7. a second inner net frame; 8. a second outer net frame; 9. a second connecting wire; 10. a concrete layer; 11. coating a mortar layer; 12. a support bar; 13. an outer connecting member; 14. a plug; 15. an inner template; 16. an outer template; 17. an inner connecting member.
Detailed Description
The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the utility model.
The closed end of the U-shaped wire 6 is connected with the outer net rack structure, and the end parts of two straight edges of the U-shaped wire are connected after respectively penetrating through the rock wool layer 1. The web wires 5 can realize the connection between the net rack and the rock wool layer 1, but the processed heat-preservation plate structure needs to be transported to a construction site, and the web wires 5 are easy to loosen in the transportation process, so that the distance between the net rack, particularly the internal net rack, and the rock wool layer 1 is influenced, and the tensile strength of the rock wool layer 1 can be weakened; and U type connecting wire can not only realize being connected of rack and rock wool layer 1, and its open end can be screwed up simultaneously and lock to 5 not hard up problems of abdominal wire have been solved in the transportation process.
As shown in fig. 2 to 4, the utility model also relates to a rock wool heat-insulating wall structure, which comprises the rock wool heat-insulating plate structure, wherein a concrete layer 10 is arranged on the inner side of the rock wool heat-insulating plate structure, a plastering mortar layer 11 is arranged on the outer side of the rock wool layer 1, and the outer net rack structure is arranged in the plastering mortar layer 11. Spatial grid structure supports spacingly to 1 surface on rock wool layer, rock wool layer 1 tensile strength has not only been increased, it is not hard up still to avoid rock wool layer 1 to appear when the pouring concrete, rock wool layer 1 is stable at concrete placement in-process, spatial grid structure on 1 surface on rock wool layer can also satisfy the requirement of plastering mortar layer 11, rock wool insulation panel structure has not only guaranteed the tensile strength of wall body, the wall body surface roughness, adopt incombustible A level insulation material rock wool board moreover, satisfy the dual requirement of national external thermal insulation fire prevention and thermal insulation performance completely.
Still including the location supporting component who is used for supporting inner formword 15, exterior sheathing 16, the location supporting component includes bracing piece 12, rock wool layer 1 and outer net rack structure are passed to the outer end of bracing piece 12 and are used for fixing a position exterior sheathing 16, and its inner end is passed and is used for fixing a position inner formword 15 in waiting to pour into concrete layer 10 region. The heat-insulating wall structure needs to support the inner formwork 16 and the outer formwork 16 so as to be convenient for pouring the concrete layer 10, in order to stably support the inner formwork 16 and the outer formwork 16, the supporting rod 12 is additionally arranged between the inner formwork 16 and the outer formwork 16, the supporting rod 12 penetrates through the rock wool layer 1, the inner formwork 16 and the outer formwork 16 are respectively supported through two ends of the supporting rod 12, the inner surface of the inner formwork 16 and the inner surface of the outer formwork 16 are further limited and supported, and therefore the requirement of stable support of the inner formwork 16 and the outer formwork 16 is met.
An outer connecting piece 13 connected with the outer net rack structure is arranged at the outer end of the supporting rod 12, and a plug 14 is arranged at the inner end of the supporting rod 12. The outer connecting piece 13 can be a connecting plate or an outer connecting hook, the outer connecting piece 13 can be welded with the outer net rack structure, the stability of the positioning support assembly is further ensured, and the positioning effect of the support rod 12 is prevented from being influenced when the concrete layer 10 is poured; in order to ensure that the inner and outer templates 16 are stably supported, the supporting rods 12 are made of metal materials with high strength, if the end parts of the supporting rods 12 are directly exposed on the outer side, the end parts are exposed to rust for a long time, and the end plugs 14 made of rubber materials can be adopted, so that the rust phenomenon on the inner wall of the heat-insulating wall structure after long-time use is avoided, and the attractive effect of the wall is kept.
The thickness of the plastering mortar layer 11 is 20-30 mm. Both can satisfy the appearance pleasing to the eye, can protect rock wool layer 1 insulation material, smear mortar layer 11 simultaneously and can not be too thick, otherwise the easy fracture of wall body surface still can increase the construction cost of wall body, can also improve the tensile strength of rock wool outer insulation board through smearing mortar layer 11 on outer grid structure to solve the problem of rock wool heat retaining instability and potential safety hazard.
The outer end of the abdominal wire 5 is connected with the outer net rack structure, and the inner end of the abdominal wire 5 extends out of the rock wool layer 1 and is connected with the inner net rack structure.
The inboard on rock wool layer 1 is equipped with interior rack structure, interior rack structure adopts the individual layer rack. Protection rock wool layer 1 on the one hand, the tensile strength that rock wool heated board was further increased on the other hand. The rest is the same as example 1, and will not be described in more detail.
As shown in fig. 6, the utility model also relates to a rock wool heat-insulating wall structure, which comprises the rock wool heat-insulating plate structure, wherein a concrete layer 10 is arranged on the inner side of the rock wool heat-insulating plate structure, a mortar coating layer 11 is arranged on the outer side of the rock wool layer 1, and the outer net rack structure is arranged in the mortar coating layer 11. Spatial grid structure supports spacingly to 1 surface on rock wool layer, rock wool layer 1 tensile strength has not only been increased, it is not hard up still to avoid rock wool layer 1 to appear when the pouring concrete, rock wool layer 1 is stable at concrete placement in-process, spatial grid structure on 1 surface on rock wool layer can also satisfy the requirement of plastering mortar layer 11, rock wool insulation panel structure has not only guaranteed the tensile strength of the wall body of shear force wall, the wall surface roughness, adopt incombustible A level insulation material rock wool board moreover, satisfy the dual requirement of national to external heat preservation fire prevention and thermal insulation performance completely.
Still including the location supporting component who is used for supporting inner formword 15, exterior sheathing 16, the location supporting component includes bracing piece 12, rock wool layer 1 and outer net rack structure are passed to the outer end of bracing piece 12 and are used for fixing a position exterior sheathing 16, and its inner end is passed and is used for fixing a position inner formword 15 in waiting to pour into concrete layer 10 region. The heat-insulating wall structure needs to support the inner formwork 16 and the outer formwork 16 so as to be convenient for pouring the concrete layer 10, in order to stably support the inner formwork 16 and the outer formwork 16, the supporting rod 12 is additionally arranged between the inner formwork 16 and the outer formwork 16, the supporting rod 12 penetrates through the rock wool layer 1, the inner formwork 16 and the outer formwork 16 are respectively supported through two ends of the supporting rod 12, the inner surface of the inner formwork 16 and the inner surface of the outer formwork 16 are further limited and supported, and therefore the requirement of stable support of the inner formwork 16 and the outer formwork 16 is met.
In embodiment 3, as shown in fig. 7, the outer ends of the abdominal wires 5 are connected to the outer net frame structure, and the inner ends of the abdominal wires 5 extend into the rock wool layer 1. The net rack structure and the rock wool layer 1 are connected through the web wires 5, and the web wires 5 can be the inner surface which is not exposed out of the rock wool layer 1.
Interior rack structure includes the outer rack of rack 7 in the second and second 8, rack 7 sets up in the second rock wool layer 1's internal surface position department, the outer rack of second 8 sets up through second connecting wire 9 the outside of rack 7 in the second. Rock wool layer 1's inboard has also set up double-deck rack, and the internal grid is close to rock wool layer 1's internal surface, and protection rock wool layer 1 increases rock wool heated board's compressive strength, tensile strength and rock wool layer 1 and concrete layer 10 joint strength.
The meshes of the first inner net rack 2 are smaller than or equal to those of the first outer net rack 3; the mesh of the second inner net rack 7 is smaller than or equal to the mesh of the second outer net rack 8. For example, the inner net frame can adopt galvanized steel wires, the meshes of the inner net frame can adopt 100mm by 100mm, and the meshes of the outer net frame can be 50mm by 50 mm. The net rack 7 is respectively clung to the outer surface and the outer surface of the rock wool layer 1 in the first and the second, the rock wool layer 1 can be tightly squeezed to protect the rock wool layer 1, the problem that the rock wool layer 1 is damaged when concrete is poured is avoided, the inner net rack can play a role in supporting the rock wool layer 1, so that the holes of the inner net rack are not required to be too many, the outer net rack needs to support a plastering mortar layer, so the holes are dense, and the stability of the plastering mortar layer is ensured.
As shown in fig. 9 and 10, the utility model further relates to a rock wool heat preservation wall structure, which comprises the rock wool heat preservation plate structure, a concrete layer 10 and a plastering mortar layer 11, wherein the concrete layer is arranged on the inner side and the outer side of the rock wool heat preservation plate structure, and the plastering mortar layer is arranged on the outer side of the concrete layer. The heat-insulating wall structure can be used as a self-heat-insulating wall structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a rock wool insulation board structure, includes rock wool layer (1), its characterized in that, the outside on rock wool layer (1) is equipped with outer spatial grid structure, outer spatial grid structure adopts double-deck rack, is first interior spatial grid (2) and first outer spatial grid (3) respectively, first interior spatial grid (2) set up the surface position department on rock wool layer (1), first outer spatial grid (3) set up through first connecting wire (4) the outside of first interior spatial grid (2), outer spatial grid structure pass through binder (5) or U type silk (6) with rock wool layer (1) is connected.
2. The rock wool insulation board structure as claimed in claim 1, wherein the rock wool layer (1) is provided with an internal net frame structure at the inner side, and the internal net frame structure is a single-layer net frame or a double-layer net frame.
3. The rock wool insulation board structure of claim 2, characterized in that, the interior net rack structure includes second interior net rack (7) and second outer net rack (8), the second interior net rack (7) sets up in rock wool layer (1)'s internal surface position department, second outer net rack (8) pass through second connecting wire (9) and set up in the outside of second interior net rack (7).
4. A rock wool insulation board structure according to claim 2, characterized in that the outer end of the binder (5) is connected with the outer net rack structure, and the inner end of the binder (5) extends into the rock wool layer (1), or extends out of the rock wool layer (1) and is connected with the inner net rack structure.
5. A rock wool insulation board structure according to any one of claims 1-4, characterized in that the closed end of the U-shaped wire (6) is connected with the outer grid structure, and the ends of the two straight sides are connected after passing through the rock wool layer (1), respectively.
6. A rock wool insulation board structure according to claim 3, characterized in that the mesh of the first inner net rack (2) is smaller than or equal to the mesh of the first outer net rack (3); the mesh of the second inner net rack (7) is smaller than or equal to the mesh of the second outer net rack (8).
7. A rock wool thermal insulation wall structure, characterized in that, includes the rock wool insulation board structure of any claim 1-6, still includes concrete layer (10) and smear mortar layer (11), concrete layer sets up the inboard and/or the outside of rock wool insulation board structure, smear mortar layer sets up the outside of rock wool insulation board structure or the outside of concrete layer.
8. A rock wool insulation wall structure according to claim 7, characterized in that, still includes the location support subassembly that is used for supporting inside and outside template (16), the location support subassembly includes bracing piece (12), the outer end of bracing piece (12) is passed rock wool layer (1) and outside net rack structure is used for fixing a position outside template (16), its inner end is passed the concrete layer (10) area of waiting to pour into a position inside template (15).
9. The rock wool heat preservation wall structure of claim 8, characterized in that the outer end of the support rod (12) is provided with an outer connecting piece (13) connected with an outer net rack structure, and/or the inner end of the support rod (12) is provided with an inner connecting piece or a plug (14).
10. The rock wool thermal insulation wall structure as claimed in claim 7, wherein the thickness of the plastering mortar layer (11) is 20-30 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383414.5U CN216305009U (en) | 2021-09-29 | 2021-09-29 | Rock wool insulation board structure and thermal insulation wall structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383414.5U CN216305009U (en) | 2021-09-29 | 2021-09-29 | Rock wool insulation board structure and thermal insulation wall structure |
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| CN216305009U true CN216305009U (en) | 2022-04-15 |
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| CN202122383414.5U Active CN216305009U (en) | 2021-09-29 | 2021-09-29 | Rock wool insulation board structure and thermal insulation wall structure |
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2021
- 2021-09-29 CN CN202122383414.5U patent/CN216305009U/en active Active
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Assignee: Shanxi Guangxin Energy Saving Technology Co.,Ltd. Assignor: SHANDONG LONGXIN CONSTRUCTION GROUP CO.,LTD. Contract record no.: X2023980039286 Denomination of utility model: A rock wool insulation board structure and insulation wall structure Granted publication date: 20220415 License type: Common License Record date: 20230809 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei Zhongcai Energy Conservation Technology Co.,Ltd. Assignor: SHANDONG LONGXIN CONSTRUCTION GROUP CO.,LTD. Contract record no.: X2023980040878 Denomination of utility model: A rock wool insulation board structure and insulation wall structure Granted publication date: 20220415 License type: Common License Record date: 20230904 |
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