Mineral wool board suspended ceiling terminal equipment integrated belt modular structure

Through the modularly designed ceiling structure, the rapid assembly and disassembly of mineral wool panel ceilings is achieved using mobile hooks and connectors, which solves the problem of inconvenient on-site assembly of mineral wool panel ceiling structures in the prior art, improves installation efficiency and structural stability, and reduces the cost of use.

CN120486648APending Publication Date: 2025-08-15ZHEJIANG MUTU BUILDING DECORATION ENG

Patent Information

Application Number
CN202510820282.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-18
Publication Date
2025-08-15

AI Technical Summary

Technical Problem

The existing mineral wool panel ceiling structure is inconvenient and time-consuming and labor-intensive when assembling on site, and is difficult to install quickly.

Method used

The modular design adopts a combination of ceiling modules, equipment belt modules and mineral wool board integrated modules, and the first and second mobile hooks and connectors are assembled to achieve modularization of ceiling structures. Fire protection, light source and ventilation equipment can be quickly installed in the equipment belt modules.

Benefits of technology

It improves the convenience and stability of on-site assembly, facilitates maintenance, reduces usage costs, and the structure can be reused.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a mineral wool board suspended ceiling terminal equipment integration belt modular structure which comprises a suspended ceiling module, an equipment belt module and a mineral wool board integration module, the suspended ceiling module is used for carrying out suspended ceiling bearing on the whole structure, and the equipment belt module is combined with the suspended ceiling module through a plurality of first movable hooks and a plurality of second movable hooks; the two sides of the equipment belt module are combined with the mineral wool board integration module through a plurality of connecting pieces; the suspended ceiling module comprises at least two bearing keels in the front-back direction and a plurality of suspended ceiling hooks, and the bearing keels are hung in the suspended ceiling hooks and hung on a roof through the suspended ceiling hooks. According to the integrated belt modular structure of the mineral wool board ceiling terminal equipment, the overall structure is modularly designed, the multiple modules are combined through the first hooks, the second hooks and the connecting pieces, all the modules are independent, on-site combination is rapid and convenient, and the convenience of on-site assembly is greatly improved.
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Description

Technical Field

[0001] The invention relates to the technical field of suspended ceiling structures, in particular to a mineral wool board suspended ceiling terminal equipment integrated with a modular structure. Background Art

[0002] Mineral wool board is a building material made from mineral fiber wool as the primary raw material, with appropriate additives, through a series of processes including batching, molding, drying, embossing, and cutting. It contains no asbestos and offers excellent fire resistance, sound absorption, insulation, and decorative properties, making it widely used in various indoor ceiling and wall decoration applications.

[0003] Reference patent publication number "CN213868517U" discloses a large-area mineral wool board ceiling structure, including a hanger, a load-bearing keel, a main keel and a secondary keel. One end of the hanger is fixed to the roof, and the other end of the hanger is fixedly connected to the load-bearing keel. The main keel is arranged below the load-bearing keel and is perpendicular to the load-bearing keel. The secondary keel is arranged between two adjacent main keels.

[0004] As shown in the above technology, when the mineral wool board ceiling is suspended, the operation is performed through the ceiling structure. The existing ceiling structure has an overall design and a large structure volume. It is inconvenient to operate during on-site lifting and is time-consuming and labor-intensive. Therefore, a mineral wool board ceiling terminal device is proposed with an integrated modular structure to modularize the ceiling structure, thereby facilitating rapid on-site assembly and installation. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a mineral wool board ceiling terminal device integrated with a modular structure, which solves the problem that the existing mineral wool board ceiling structure is inconvenient to be assembled and installed on site.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a modular structure of a mineral wool board ceiling terminal device integrated belt includes a ceiling module, an equipment belt module, and a mineral wool board integrated module. The ceiling module is used to support the entire structure as a ceiling, and the equipment belt module is combined with the ceiling module through a plurality of first movable hooks and a plurality of second movable hooks. Both sides of the equipment belt module are combined with the mineral wool board integrated module through a plurality of connectors.

[0007] The ceiling module includes at least two front and rear load-bearing keels and a plurality of ceiling hooks, the load-bearing keels are hung in the ceiling hooks and hung on the roof through the ceiling hooks, the equipment belt module includes a left side of the equipment belt located on the left and a right side of the equipment belt located on the right, a grille module is provided between the left side and the right side of the equipment belt, and the grille module is used to be assembled with fire protection, light source and ventilation equipment, the mineral wool board module includes a plurality of splicing plates, T-shaped keels and mineral wool board bodies, the splicing plates are matched with connecting parts, and are equidistantly combined on one side of the left side and the right side of the equipment belt.

[0008] Preferably, the ceiling hook includes a first U-shaped hook plate, bolts are inserted between the first U-shaped hook plates, and the bolts pass through the first U-shaped hook plate and the load-bearing keel and extend to the surface behind the first U-shaped hook plate and are threadedly connected with a first nut, a hanging rod is inserted above the first U-shaped hook plate, and the surface of the hanging rod is provided with threads, and the hanging rod is fixed to the first U-shaped hook plate by two upper and lower second nuts.

[0009] Preferably, the left side of the equipment belt is designed as an integrated whole, the upper left side of the left side of the equipment belt is bent to form a first movable groove, the right side of the left side of the equipment belt is bent to form a left L-shaped plate, and the inner side of the left L-shaped plate forms a left placement groove, the lower left side of the first movable groove is bent to form a left installation groove, the top of the right side of the equipment belt is bent to form a second movable groove, the left side of the right side of the equipment belt is symmetrically provided with a right L-shaped plate identical to the left L-shaped plate, and the inner side of the right L-shaped plate forms a right placement groove, and the right side of the right side of the equipment belt is symmetrically provided with a right installation groove identical to the left installation groove.

[0010] Preferably, the equipment belt module includes a transverse snap plate, and snap grooves are opened on the left and right sides of the bottom of the transverse snap plate. The transverse snap plate is clamped between the left L-shaped plate and the right L-shaped plate through the snap grooves. A plurality of circular snaps are fixedly connected at equal distances at the bottom of the transverse snap plate, and a grille is clamped on the circular snaps. A top plate is placed between the two left placement grooves, and the top plate cover is arranged above the grille module.

[0011] Preferably, the first movable hook is made of one-piece molding, and the first movable hook includes a first vertical movable plate, an intermediate L-shaped plate and a second U-shaped hook plate. The intermediate L-shaped plate is arranged on the left side of the first vertical movable plate, and the second U-shaped hook plate is arranged on the right side of the intermediate L-shaped plate. The first vertical movable plate is inserted into the inside of the first movable groove, and the second U-shaped hook plate is hooked on the load-bearing keel.

[0012] Preferably, the second movable hook is made of one-piece molding, and the second movable hook includes a horizontal movable plate, a connecting plate and a third U-shaped hook plate. The connecting plate is arranged on the top of the horizontal movable plate, and the third U-shaped hook plate is arranged on the top of the connecting plate. The horizontal movable plate is inserted into the inside of the second movable groove, and the third U-shaped hook plate is hung on the load-bearing keel.

[0013] Preferably, the connecting member includes a second vertical movable plate, one side of which is fixedly connected to two front and rear limit blocks, and a slot is formed between the two limit blocks, and a plurality of through slots are equidistantly provided inside the T-shaped keel.

[0014] Preferably, the splicing plate includes a partition, the bottom of the partition is fixedly connected to a receiving plate, and the partition and the receiving plate form a T-shape, the left and right sides of the partition are fixedly connected to a card block, the card slot on the right side of the partition is clamped in the card slot, and the card block on the left side of the partition is inserted in the T-shaped keel, and multiple splicing plates are mounted between the T-shaped keel and the connecting piece, and the mineral wool board body is placed between adjacent splicing plates, and the mineral wool board body is on the receiving plate.

[0015] Beneficial effects

[0016] The present invention provides a modular structure for integrated terminal equipment for a mineral wool board ceiling. Compared with the prior art, it has the following advantages:

[0017] 1. The mineral wool board ceiling terminal equipment integrates a modular structure. By modularizing the overall structure, multiple modules are combined through the first hook, the second hook and the connector. Each module is independent and the on-site combination is quick and convenient, which greatly improves the convenience of on-site assembly.

[0018] 2. The terminal equipment of the mineral wool board ceiling is integrated with a modular structure. By setting up the equipment belt module, it can be quickly assembled with fire protection, light source and ventilation equipment in the equipment belt module without the need for additional installation through drilling and bolts. The top plate is easy to move and remove, making it convenient for inspection and maintenance.

[0019] 3. The mineral wool board ceiling terminal equipment integrates a modular structure. Through the modular design of the overall structure, the structure is stable, safe and reliable after the modules are spliced together. Moreover, the whole device is easy to disassemble and can be reused, which reduces user costs and has high economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance of the present invention;

[0021] Figure 2 is a schematic diagram of a ceiling module of the present invention;

[0022] Figure 3 is a schematic diagram of a ceiling hook of the present invention;

[0023] Figure 4 It is a schematic diagram of the device with modules of the present invention;

[0024] Figure 5 is a schematic diagram of a grille module of the present invention;

[0025] Figure 6 It is a partial schematic diagram of the device with modules of the present invention;

[0026] Figure 7 It is a partial schematic diagram of the mineral wool board integrated module of the present invention;

[0027] Figure 8 Schematic diagram of the connecting piece of the present invention.

[0028] In the figure: 1. Load-bearing keel; 2. Ceiling hook; 21. First U-shaped hook plate; 22. Bolt; 23. First nut; 24. Second nut; 25. Hanging rod; 3. Left side of equipment belt; 31. First moving groove; 32. Left L-shaped plate; 33. Left placement groove; 34. Left installation groove; 4. Right side of equipment belt; 41. Second moving groove; 42. Right L-shaped plate; 43. Right placement groove; 44. Right installation groove; 5. Grille module; 51. Horizontal snap plate; 52. Snap groove; 53. Circular snap fastener; 54, grille; 6, first movable hook; 61, first vertical movable plate; 62, L-shaped plate; 63, second U-shaped hook plate; 7, second movable hook; 71, horizontal movable plate; 72, connecting plate; 73, third U-shaped hook plate; 8, connector; 81, second vertical movable plate; 82, limit block; 83, slot; 9, splicing plate; 91, partition; 92, receiving plate; 93, block; 10, T-shaped keel; 101, through slot; 11, mineral wool board body; 12, top plate. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] See also Figures 1-8 The mineral wool board ceiling terminal equipment integrated with modular structure provides two technical solutions:

[0031] The first embodiment includes a ceiling module, an equipment belt module and a mineral wool board integrated module. The ceiling module is used to support the entire structure as a ceiling. The equipment belt module is combined with the ceiling module through multiple first movable hooks 6 and multiple second movable hooks 7. Both sides of the equipment belt module are combined with the mineral wool board integrated module through multiple connectors 8.

[0032] The ceiling module includes at least two front and rear load-bearing keels 1 and multiple ceiling hooks 2. The load-bearing keels 1 are hung in the ceiling hooks 2 and suspended on the roof through the ceiling hooks 2. The equipment belt module includes a left side 3 of the equipment belt located on the left and a right side 4 of the equipment belt located on the right. The mineral wool board integrated module includes multiple splicing plates 9, T-shaped keels 10 and mineral wool board bodies 11. The splicing plates 9 are matched with the connecting parts 8 and are equidistantly combined on one side of the left side 3 and the right side 4 of the equipment belt.

[0033] The ceiling hook 2 includes a first U-shaped hook plate 21, and a bolt 22 is inserted between the first U-shaped hook plate 21. The bolt 22 passes through the first U-shaped hook plate 21 and the load-bearing keel 1 and extends to the surface behind the first U-shaped hook plate 21 and is threadedly connected with a first nut 23. A hanging rod 25 is inserted above the first U-shaped hook plate 21, and the surface of the hanging rod 25 is provided with a thread. The hanging rod 25 is fixed to the first U-shaped hook plate 21 by two upper and lower second nuts 24.

[0034] The left side 3 of the equipment belt is an integrated design. The upper left side of the left side 3 of the equipment belt is bent to form a first movable groove 31, the right side of the left side 3 of the equipment belt is bent to form a left L-shaped plate 32, and the inner side of the left L-shaped plate 32 forms a left placement groove 33, the lower left side of the first movable groove 31 is bent to form a left installation groove 34, the top of the right side 4 of the equipment belt is bent to form a second movable groove 41, the left side of the right side 4 of the equipment belt is symmetrically provided with a right L-shaped plate 42 that is the same as the left L-shaped plate 32, and the inner side of the right L-shaped plate 42 forms a right placement groove 43, and the right side of the right side 4 of the equipment belt is symmetrically provided with a right installation groove 44 that is the same as the left installation groove 34.

[0035] The first movable hook 6 is made of one-piece molding, and the first movable hook 6 includes a first vertical movable plate 61, an intermediate L-shaped plate 62 and a second U-shaped hook plate 63. The intermediate L-shaped plate 62 is arranged on the left side of the first vertical movable plate 61, and the second U-shaped hook plate 63 is arranged on the right side of the intermediate L-shaped plate 62. The first vertical movable plate 61 is inserted into the inside of the first movable groove 31, and the second U-shaped hook plate 63 is hooked on the load-bearing keel 1.

[0036] The second movable hook 7 is made of one-piece molding, and the second movable hook 7 includes a horizontal movable plate 71, a connecting plate 72 and a third U-shaped hook plate 73. The connecting plate 72 is arranged on the top of the horizontal movable plate 71, and the third U-shaped hook plate 73 is arranged on the top of the connecting plate 72. The horizontal movable plate 71 is inserted into the inside of the second movable groove 41, and the third U-shaped hook plate 73 is hung on the load-bearing keel 1.

[0037] The connecting member 8 includes a second vertical movable plate 81 , one side of which is fixedly connected to two front and rear limit blocks 82 , and a slot 83 is formed between the two limit blocks 82 . A plurality of through slots 101 are equidistantly provided inside the T-shaped keel 10 .

[0038] The splicing plate 9 includes a partition 91, the bottom of the partition 91 is fixedly connected to a receiving plate 92, and the partition 91 and the receiving plate 92 form a T shape, and the left and right sides of the partition 91 are fixedly connected to a clamping block 93. The clamping slot 83 on the right side of the partition 91 is clamped in the clamping slot 83, and the clamping block 93 on the left side of the partition 91 is inserted into the T-shaped keel 10. Multiple splicing plates 9 are all installed between the T-shaped keel 10 and the connecting piece 8. The mineral wool board body 11 is placed between adjacent splicing plates 9, and the mineral wool board body 11 is on the receiving plate 92.

[0039] By modularizing the overall structure, multiple modules are combined through the first hook 6, the second hook 7 and the connector 8. Each module is independent and the on-site assembly is quick and convenient, which greatly improves the convenience of on-site assembly. Through the modular design of the overall structure, the structure of each module after splicing is stable, safe and reliable, and the whole is easy to disassemble and can be reused, which reduces user costs and has high economy.

[0040] The second embodiment is mainly different from the first embodiment in that a grille module 5 is arranged between the left side 3 of the equipment belt and the right side 4 of the equipment belt, and the grille module 5 is used to be assembled with fire protection, light source and ventilation equipment. The equipment belt module includes a horizontal snap plate 51, and snap grooves 52 are opened on the left and right sides of the bottom of the horizontal snap plate 51. The horizontal snap plate 51 is clamped between the left L-shaped plate 32 and the right L-shaped plate 42 through the snap grooves 52. A plurality of circular snaps 53 are fixedly connected at equal distances to the bottom of the horizontal snap plate 51, and a grille 54 is clamped on the circular snap 53. A top plate 12 is placed between the two left placement grooves 33, and the top plate 12 is covered on top of the grille module 5.

[0041] By setting up the equipment belt module 5, the fire protection, light source and ventilation equipment can be quickly assembled in the equipment belt module 5 without the need for additional installation through drilling and bolts, and the top plate 12 is easy to move and remove, thereby facilitating inspection and maintenance.

[0042] Ceiling module assembly: fix multiple hangers 25 to the roof, and tighten the first U-shaped hook plate 21 with the upper and lower second nuts 24, then pass the load-bearing keel 1 through multiple first U-shaped hook plates 21 in the same straight line, and pass the bolt 22 from one side of the first U-shaped hook plate 21 and the inside of the load-bearing keel 1, and then tighten it with the first nut 23.

[0043] Equipment belt module assembly: Then, insert multiple first movable hooks 6 and multiple second movable hooks 7 into the first movable groove 31 and the second movable groove 41 respectively, then open the horizontal snap plate 51 on the left L-shaped plate 32 and the right L-shaped plate 42, and snap multiple grilles 54 on the circular snap 53, then insert the top plate 12 between the left placement groove 33 and the right placement groove 43, and finally hang the first movable hook 6 and the second movable hook 7 on the load-bearing keel 1.

[0044] Mineral wool board integrated module: Insert the blocks 93 on the multiple splicing panels 9 into the slots 83 in the multiple connecting parts 8 respectively, and combine the T-shaped keel 10 with the block 93 through the through slot 101 on the other side of the multiple partitions 91. After the combination is completed, place the multiple mineral wool board bodies 11 in sequence between the adjacent splicing panels 9.

[0045] Overall assembly: The equipment belt module is hung on the load-bearing keel 1 through the second U-shaped hook plate 63 and the third U-shaped hook plate 73 on the first movable hook 6 and the second movable hook 7, and the first movable hook 6 and the second movable hook 7 on the same straight line are hung on the same load-bearing keel 1, and then the second vertical movable plate 81 of the connecting piece 8 on the mineral wool board integrated module is inserted into the left mounting groove 34, and the overall assembly is completed at this time.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The mineral wool board ceiling terminal equipment is integrated with a modular structure, characterized by: It comprises a ceiling module, an equipment belt module and a mineral wool board integrated module, wherein the ceiling module is used to carry out ceiling load-bearing for the entire structure, the equipment belt module is combined with the ceiling module via a plurality of first movable hooks (6) and a plurality of second movable hooks (7), and both sides of the equipment belt module are combined with the mineral wool board integrated module via a plurality of connectors (8); The ceiling module comprises at least two front and rear load-bearing keels (1) and a plurality of ceiling hooks (2); the load-bearing keels (1) are hung in the ceiling hooks (2) and are hung on the roof through the ceiling hooks (2); the equipment belt module comprises a left side edge (3) of the equipment belt located on the left and a right side edge (4) of the equipment belt located on the right; a grille module (5) is provided between the left side edge (3) of the equipment belt and the right side edge (4) of the equipment belt, and the grille module (5) is used for assembling with fire protection, light source and ventilation equipment; the mineral wool board integrated module comprises a plurality of splicing plates (9), T-shaped keels (10) and a mineral wool board body (11); the splicing plates (9) are matched with the connecting pieces (8) and are equidistantly combined on one side of the left side edge (3) and the right side edge (4) of the equipment belt.

2. The modular structure of the integrated terminal equipment for the mineral wool board ceiling according to claim 1 is characterized by: The ceiling hook (2) includes a first U-shaped hook plate (21), a bolt (22) is inserted between the first U-shaped hook plate (21), and the bolt (22) passes through the first U-shaped hook plate (21) and the load-bearing keel (1) and extends to the surface behind the first U-shaped hook plate (21) and is threadedly connected with a first nut (23), a suspension rod (25) is inserted above the first U-shaped hook plate (21), and the surface of the suspension rod (25) is provided with a thread, and the suspension rod (25) is fixed to the first U-shaped hook plate (21) by two upper and lower second nuts (24).

3. The modular structure of the integrated terminal equipment for the mineral wool board ceiling according to claim 1 is characterized by: The left side (3) of the equipment belt is designed as an integrated whole. The upper left side of the left side (3) of the equipment belt is bent to form a first movable groove (31). The right side of the left side (3) of the equipment belt is bent to form a left L-shaped plate (32), and the inner side of the left L-shaped plate (32) forms a left placement groove (33). The lower left side of the first movable groove (31) is bent to form a left installation groove (34). The top of the right side (4) of the equipment belt is bent to form a second movable groove (41). The left side of the right side (4) of the equipment belt is symmetrically provided with a right L-shaped plate (42) identical to the left L-shaped plate (32), and the inner side of the right L-shaped plate (42) forms a right placement groove (43). The right side of the right side (4) of the equipment belt is symmetrically provided with a right installation groove (44) identical to the left installation groove (34).

4. The modular structure of the integrated terminal equipment for the mineral wool board ceiling according to claim 3 is characterized by: The equipment belt module comprises a transverse snap plate (51), wherein the left and right sides of the bottom of the transverse snap plate (51) are provided with snap grooves (52), and the transverse snap plate (51) is clamped between the left L-shaped plate (32) and the right L-shaped plate (42) through the snap grooves (52). The bottom of the transverse snap plate (51) is fixedly connected with a plurality of circular snaps (53) at equal distances, and a grille (54) is clamped on the circular snaps (53). A top plate (12) is placed between the two left placement grooves (33), and the top plate (12) is covered above the grille module (5).

5. The modular structure of the integrated terminal equipment for the mineral wool board ceiling according to claim 3 is characterized by: The first movable hook (6) is made of an integral molding, and comprises a first vertical movable plate (61), an intermediate L-shaped plate (62) and a second U-shaped hook plate (63), wherein the intermediate L-shaped plate (62) is arranged on the left side of the first vertical movable plate (61), and the second U-shaped hook plate (63) is arranged on the right side of the intermediate L-shaped plate (62), the first vertical movable plate (61) is inserted into the interior of the first movable groove (31), and the second U-shaped hook plate (63) is hooked on the load-bearing keel (1).

6. The modular structure of the integrated terminal equipment for the mineral wool board ceiling according to claim 3 is characterized by: The second movable hook (7) is made of an integral molding, and comprises a horizontal movable plate (71), a connecting plate (72) and a third U-shaped hook plate (73), wherein the connecting plate (72) is arranged on the top of the horizontal movable plate (71), and the third U-shaped hook plate (73) is arranged on the top of the connecting plate (72), the horizontal movable plate (71) is inserted into the interior of the second movable groove (41), and the third U-shaped hook plate (73) is hung on the load-bearing keel (1).

7. The modular structure of the integrated terminal equipment for the mineral wool board ceiling according to claim 1 is characterized by: The connecting member (8) comprises a second vertical movable plate (81), one side of which is fixedly connected to two front and rear limit blocks (82), and a slot (83) is formed between the two limit blocks (82), and a plurality of through slots (101) are formed at equal distances inside the T-shaped keel (10).

8. The modular structure of the integrated terminal equipment for the mineral wool board ceiling according to claim 7 is characterized by: The splicing plate (9) includes a partition (91), the bottom of the partition (91) is fixedly connected to a receiving plate (92), and the partition (91) and the receiving plate (92) form a T shape, the left and right sides of the partition (91) are fixedly connected to a card block (93), the card slot (83) on the right side of the partition (91) is clamped in the card slot (83), and the card block (93) on the left side of the partition (91) is inserted into the T-shaped keel (10), and multiple splicing plates (9) are all mounted between the T-shaped keel (10) and the connecting piece (8), and the mineral wool board body (11) is placed between adjacent splicing plates (9), and the mineral wool board body (11) is on the receiving plate (92).

Citation Information

Patent Citations

  • Large-area mineral wool board suspended ceiling structure

    CN213868517U

Cited By

  • Adjustable installation method for equipment integration belt and adjustable hoisting structural part

    CN121138498A