CN210482683U - Dew-proof exposed frame curtain wall system - Google Patents
Dew-proof exposed frame curtain wall system Download PDFInfo
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- CN210482683U CN210482683U CN201921275969.4U CN201921275969U CN210482683U CN 210482683 U CN210482683 U CN 210482683U CN 201921275969 U CN201921275969 U CN 201921275969U CN 210482683 U CN210482683 U CN 210482683U
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Abstract
The utility model discloses an anti-condensation exposed frame curtain wall system, it includes main joist, glass board, fixed subassembly and heat insulating strip. Wherein, the glass plate is arranged at the outer side of the main keel; the fixing component is arranged on the outer side of the glass plate; the heat insulation strip comprises a main body part, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part extend out from two sides of the main body part respectively; wherein, the main joist is located the inboard on partition layer, and fixed subassembly is located the outside on partition layer. The utility model discloses an anti-condensation exposed frame curtain wall system can prevent the air convection through the partition wall layer that forms, and the outside through locating the partition wall layer with fixed subassembly does not contact with the main joist of partition wall in situ side again can the heat-proof bridge to the anti-condensation performance of exposed frame curtain wall system has effectively been improved.
Description
Technical Field
The utility model relates to a building curtain technical field especially relates to an anti-condensation bright frame curtain system.
Background
The curtain wall is the outer wall enclosure of the building, does not bear the weight, hangs like a curtain, is also called as a curtain wall, and is a light wall with decorative effect commonly used by modern large-scale and high-rise buildings. The curtain wall with the exposed frame is widely used at present, but the existing exposed frame curtain wall has the problem of dewing due to a heat bridge and air convection. The main reasons for causing the thermal bridge are two, firstly, the outer pressing block is directly connected with the main keel by penetrating the heat insulation strip in a screw driving mode; and secondly, the outer pressing block penetrates through the heat insulation strip to be in contact with the main keel in a mode that a layer of outer rubber wraps the bolt, and obvious local heat conduction exists in both modes, so that dew condensation is easily generated. Therefore, in order to solve the above problems, the utility model provides a heat-proof bridge, prevent the dew condensation prevention exposed frame curtain wall system of air convection.
SUMMERY OF THE UTILITY MODEL
The utility model provides an anti-condensation exposed frame curtain wall system aims at solving the problem that current exposed frame curtain wall easily produces the dewfall because of having heat bridge and air convection.
In order to solve the technical problem, the utility model provides an anti-condensation bright frame curtain system includes: a main keel; the glass plate is arranged on the outer side of the main keel; the fixing assembly is arranged on the outer side of the glass plate; the first connecting part and the second connecting part of the heat insulation strip are respectively connected with the main keel and the fixing component so that the heat insulation strip is fixed between the main keel and the fixing component, and two wing edges of the main body part of the heat insulation strip are respectively abutted with the two glass plates so as to form a partition layer; the main keel is positioned on the inner side of the partition layer, and the fixing assembly is positioned on the outer side of the partition layer.
Furthermore, the glass plate is a double-layer glass plate, and two fins of the main body part of the heat insulation strip are respectively abutted against the hollow glue layers of the two glass plates.
Furthermore, the main keel is provided with a convex part facing the heat insulation strip, the convex part is provided with a first embedding groove, and a first connecting part of the heat insulation strip is embedded in the first embedding groove and is connected with the main keel in a nesting manner.
Further, the fixed subassembly includes outer briquetting and connecting piece, the connecting piece pass through the pothook structure and with the help of fastener fixed mounting in on the outer briquetting, be equipped with the second embedded groove on the connecting piece, the second connecting portion of heat insulating strip inlay in the second embedded groove and with connecting piece nested connection.
Furthermore, the outside of connecting piece is equipped with two first pothooks, the inboard of outer briquetting is equipped with two second pothooks of two first pothook looks adaptation, two when first pothook and two second pothook looks block, the connecting piece with form an installation cavity between the outer briquetting, the fastener runs through in proper order outer briquetting, installation cavity reaches the connecting piece, thereby will outer briquetting with connecting piece fixed connection.
Further, the fixing assembly further comprises a buckle cover, and the buckle cover is buckled on the outer side of the outer pressing block.
Furthermore, the outer pressing block is provided with a first sealing groove facing the glass plate, a first sealing rubber strip is clamped in the first sealing groove, and the outer pressing block is connected with the glass plate in a sealing mode through the first sealing rubber strip.
Furthermore, a second sealing groove facing the glass plate is formed in the main keel, a second sealing rubber strip is arranged in the second sealing groove, and the main keel is connected with the glass plate in a sealing mode through the second sealing rubber strip.
Furthermore, the first sealing rubber strip and the second sealing rubber strip are both multi-tooth sealing rubber strips with flanges.
Furthermore, the glass plate is LOW-E coated glass.
The utility model discloses an anti-condensation exposed frame curtain wall system, two wings of main part through the heat insulating strip respectively with two glass board looks butts and form the partition layer, can prevent the air convection between fixed subassembly and the main joist, again through locating the outside on partition layer with fixed subassembly not contact with the main joist of partition layer inboard can the heat-proof bridge to can improve the holistic anti-condensation effect of exposed frame curtain wall system. The utility model discloses an anti-condensation bright frame curtain system has solved the current bright frame curtain in market because fixed subassembly contacts the heat bridge and the air convection problem that produce with the main joist, has effectively improved the anti-condensation performance of bright frame curtain system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic structural view of an anti-condensation exposed frame curtain wall system according to an embodiment of the present invention;
fig. 2 is an explosion schematic view of the dew condensation preventing exposed frame curtain wall system according to an embodiment of the present invention;
FIG. 3 illustrates an installation view of the fixing assembly of FIG. 1;
FIG. 4 shows a schematic structural view of the thermal strip of FIG. 1; and
fig. 5a to 5d show an assembly process of the external pressing block, the connecting member and the fastening member in the dewing prevention exposed frame curtain wall system shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Fig. 1 shows a schematic structural view of an embodiment of the dew condensation preventing exposed frame curtain wall system provided by the present invention; fig. 2 is an explosion schematic view of the dew condensation preventing exposed frame curtain wall system according to an embodiment of the present invention; FIG. 3 illustrates an installation view of the fixing assembly of FIG. 1; FIG. 4 shows a schematic structural view of the thermal strip of FIG. 1; and FIGS. 5a to 5d show the assembly process of the external pressing block, the connecting member and the fastening member in the anti-dewing exposed frame curtain wall system shown in FIG. 1. As shown in fig. 1 to 5, the dew condensation preventing exposed framing curtain wall system 10 of the present embodiment includes a main joist 11, a glass plate 12, a fixing member 13, and a heat insulating strip 14. Wherein, the glass plate 12 is arranged outside the main keel 11; the fixing assembly 13 is arranged on the outer side of the glass plate 12; the heat insulating strip 14 comprises a main body part 141 and a first connecting part 142 and a second connecting part 143 respectively extending from two sides of the main body part 141, the first connecting part 142 and the second connecting part 143 of the heat insulating strip 14 are respectively connected with the main keel 11 and the fixing component 13 to fix the heat insulating strip 14 between the main keel 11 and the fixing component 13, and two fin edges 144 of the main body part 141 of the heat insulating strip 14 are respectively abutted with the two glass plates 12 to form a blocking layer; the main keel 11 is located on the inner side of the partition layer, and the fixing component 13 is located on the outer side of the partition layer. In this embodiment, through the heat insulating strip 14 two wings and two of main part 141 glass sheet 12 looks butt and form the layer of isolating can prevent fixed subassembly 13 with air convection between the main joist 11 is again through will fixed subassembly 13 locates the outside on isolating the layer and does not contact with the main joist 11 that isolates the layer inboard, realizes fixed subassembly 13 with thermal-insulated bridge cut-off between the main joist 11 is handled to improve the holistic anti-condensation effect of bright frame curtain wall system 10.
In one embodiment, for example, in the present embodiment, the glass plate 12 is a double-layer glass plate, and the two fins 144 of the main body 141 of the heat insulating strip 14 are respectively in contact with the hollow glue layers 121 of the two glass plates 12. Specifically, the two fins 144 of the main body 141 of the heat insulating strip 14 are respectively abutted against the hollow glue layers 121 of the two glass plates 12 to form the partition layer, wherein the main keel 11 is located on the inner side of the partition layer, and the fixing component 13 is located on the outer side of the partition layer, so that the horizontal isotherm is straight and does not change abruptly while the convection of air is blocked. In the present embodiment, the cross section of the two fins 144 of the main body 141 of the heat insulating strip 14 is linear; the heat insulation strips 14 are made of PA66 material; the two glass plates 12 are LOW-E coated glass. In other embodiments, the cross section of the two fins 144 of the main body 141 of the thermal insulating strip 14 may also be wavy, so long as the two fins 144 of the main body 141 of the thermal insulating strip 14 abut against the two glass plates 12 to form a blocking layer; heat insulation strips made of other materials, such as PVC heat insulation strips, can be selected, and the heat insulation effect between the fixing component 13 and the main keel 11 can be achieved; other low-radiation glass, such as multi-cavity multi-layer coated glass, can be selected, and only the radiation protection and heat preservation effects are needed. In a specific implementation, when the two glass plates 12 are mounted, the hollow adhesive layers 121 of the two glass plates 12 should be tightly attached to the two fins of the main body 141 of the heat insulating strip 14 so as to avoid direct contact with the two glass plates 12, so that the two glass plates 12 can be more tightly contacted with the two fins 144 of the main body 141 of the heat insulating strip 14.
In one embodiment, for example, in this embodiment, the main runner 11 is provided with a protrusion 111 facing the heat insulating strip 14, the protrusion 111 is provided with a first embedding groove 1111, and the first connecting portion 142 of the heat insulating strip 14 is embedded in the first embedding groove 1111 and is connected to the main runner 11 in a nesting manner. The fixing assembly 13 includes an outer pressing block 131 and a connecting member 132, the connecting member 132 is fixedly mounted on the outer pressing block 131 through a hook structure and by means of a fastener 133, a second embedding slot 1321 is formed in the connecting member 132, and the second connecting portion 143 of the heat insulating strip 14 is embedded in the second embedding slot 1321 and is connected with the connecting member 132 in a nested manner. Specifically, the protrusion 111 is a rectangular protrusion, the rectangular protrusion is provided with the first embedding groove 1111 facing the heat insulating strip 14, and the first connecting portion 142 and the second connecting portion 143 of the heat insulating strip 14 are respectively embedded in the first embedding groove 1111 and the second embedding groove 1321, so that the heat insulating strip 14 is fixed between the main runner 11 and the connecting member 132, and a good heat insulating effect between the main runner 11 and the connecting member 132 is achieved.
In an embodiment, for example, in this embodiment, two first hooks 1322 are disposed on the outer side of the connecting member 132, two second hooks 1311 adapted to the two first hooks 1322 are disposed on the inner side of the outer pressing member 131, and the two first hooks 1322 are engaged with the two second hooks 1311, so as to realize the engaging connection between the connecting member 132 and the outer pressing member 131. Specifically, as shown in fig. 5a to 5c, first, the second hook 1311 disposed on the inner side of the outer pressing block 131 is aligned with the first slot 1323 formed by the two first hooks 1322 disposed on the outer side of the connecting member 132; then, pushing one second hook 1311 of the outer pressing block 131 into the first slot 1323 of the connecting member 132, so that the two first hooks 1322 and the two second hooks 1311 are engaged with each other; finally, the outer pressing block 131 is slid leftward, so that the two first hooks 1322 and the two second hooks 1311 are tightly engaged, and the engagement connection between the outer pressing block 131 and the connecting member 132 is further achieved. Understandably, a first hook 1322 on the outer side of the connecting member 132 can also be aligned to the second slot 1312 formed by the two second hooks 1311 arranged on the inner side of the outer pressing member 131; then, the first hooks 1322 are pushed into the second slots 1312, so that the two first hooks 1322 are engaged with the two second hooks 1311; finally, the outer pressing block 131 is slid leftward to make the two first hooks 1322 and the two second hooks 1311 tightly engaged, so as to realize the engagement connection between the outer pressing block 131 and the connecting member 132. In this embodiment, the connecting member 132 may be a strip-through aluminum alloy small material; the two first hooks 1322 and the two second hooks 1311 are engaged with each other in a positive and negative manner, and the engagement between the two hooks can make the connection member 132 and the outer pressing block 131 more tightly connected. After the two first hooks 1322 and the two second hooks 1311 are engaged with each other, the gap between the first hooks 1322 and the second hooks 1311 should be controlled to be 0.2mm, so as to further ensure the tight connection between the connecting member 132 and the outer pressing block 131. In other embodiments, the connecting member 132 may be other types of connections, which only need to be connected to the outer pressing block 131 and the heat insulation strip 14, and is not limited herein. After the two first hooks 1322 and the two second hooks 1311 are engaged with each other, the gap between the first hooks 1322 and the second hooks 1311 may be determined according to actual requirements, and only the tight connection between the connecting member 132 and the outer pressing block 131 is achieved.
In an embodiment, for example, in the embodiment, when the two first hooks 1322 and the two second hooks 1311 are engaged, an installation cavity 134 is formed between the connecting member 132 and the outer pressing member 131, and the fastening member 133 sequentially penetrates through the outer pressing member 131, the installation cavity 134 and the connecting member 132, so as to fixedly connect the outer pressing member 131 and the connecting member 132. Specifically, as shown in fig. 5c to 5d, when the two first hooks 1322 and the two second hooks 1311 are engaged with each other, the fastening member 133 sequentially penetrates through the outer pressing block 131, the mounting cavity 134 and the connecting member 132, so as to fixedly connect the outer pressing block 131 and the connecting member 132. In this embodiment, the fixing member may be a screw, and after the screw is driven, since the screw position generates stress concentration, the tensile force between the outer pressing block 131 and the connecting member 132 is also transmitted to the screw position, so the thickness of the connecting member 132 cannot be smaller than the nominal diameter of the screw, that is, the thickness of the connecting member 132 cannot be smaller than the nominal diameter of the fastening member 133. In particular implementations, ST4.8 self-tapping, self-drilling screws may be used. In other embodiments, the fastening member 133 may also be a bolt, and only needs to penetrate through the outer pressing block 131, the mounting cavity 134 and the connecting member 132 in sequence to fixedly connect the outer pressing block 131 and the connecting member 132. In addition, combine fig. 1 to know, fastener 133 runs through in proper order outer briquetting 131 the installation cavity 134 reaches connecting piece 132 will outer briquetting 131 with connecting piece 132 fixed connection, but does not run through thermal-insulated strip 14 two wings 144 of main part 141 respectively with two the looks butt of glass sheet 12 forms the partition layer makes the partition layer outside outer briquetting 131 not with the partition layer is inboard the main joist 11 contacts, has avoided outer briquetting 131 with pass through fastener 133 with the main joist 11 contacts and the heat bridge problem that produces, has realized outer briquetting 131 with thermal-insulated bridge cut-off between the main joist 11 handles, has improved the anti-condensation performance of bright frame curtain wall system 10 to a certain extent.
In an embodiment, for example, in this embodiment, the fixing assembly 13 further includes a fastening cover 135, and the fastening cover 135 is fastened to an outer side of the outer pressing block 131. Specifically, two protrusions 1351 are arranged on the inner side of the buckle cover 135, two grooves 1313 matched with the two protrusions 1351 are arranged at two ends of the outer pressing block 131, and the buckle cover 135 is buckled on the outer side of the outer pressing block 131 by clamping the two protrusions 1351 with the two grooves 1313. In this embodiment, the two protrusions 1351 are respectively disposed on two sides of the inner side of the buckle cover 135, and the two grooves 1313 are respectively disposed on the left and right ends of the outer side of the outer pressing piece 131. In other embodiments, the two protrusions 1351 may be disposed at other positions on the inner side of the fastening cover 135, and the two grooves 1313 may be disposed at other positions on the outer side of the outer pressing piece 131, so that the two protrusions 1351 are engaged with the two grooves 1313, so that the fastening cover 135 is fastened to the outer side of the outer pressing piece 131.
In an embodiment, for example, in this embodiment, the outer pressing block 131 is provided with a first sealing groove 1314 facing the glass plate 12, a first sealing rubber strip 15 is clamped in the first sealing groove 1314, and the outer pressing block 131 is hermetically connected with the glass plate 12 by the first sealing rubber strip 15. The main keel 11 is provided with a second sealing groove 112 facing the glass plate 12, a second sealing rubber strip 16 is arranged in the second sealing groove 112, and the main keel 11 is connected with the glass plate 12 in a sealing manner by virtue of the second sealing rubber strip 16. The first sealing rubber strip 15 and the second sealing rubber strip 16 are both multi-tooth sealing rubber strips with flanges. Specifically, the first sealing rubber strip 15 and the second sealing rubber strip 16 are both multi-tooth sealing rubber strips, so that the close contact between the main keel 11 and the two glass plates 12 and the close contact between the outer pressing block 131 and the two glass plates 12 can be increased; the first sealing rubber strip 15 and the second sealing rubber strip 16 can still have good sealing effect when subjected to positive and negative wind pressure alternation due to the flash, and the positive effect of preventing air infiltration is achieved. In the specific implementation process, the sizes of the flashes of the first sealing rubber strip 15 and the second sealing rubber strip 16 need to be calculated so as to ensure that the first sealing rubber strip 15 and the second sealing rubber strip 16 can still be in close contact with the two glass plates 12 after rebounding under the action of positive and negative wind pressure, thereby achieving a good sealing prevention effect. In this embodiment, the first sealing rubber strip 15 and the second sealing rubber strip 16 are both multi-tooth flash EPDM sealing rubber strips. In other embodiments, the sealing rubber strip may be other rubber strips, and only the close contact sealing performance between the main keel 11 and the two glass plates 12 and between the outer pressing block 131 and the two glass plates 12 is required to be good.
The utility model provides an anti-condensation exposed frame curtain wall system, two wings of main part through the heat insulating strip respectively with two glass board looks butts and form the partition layer, can prevent the air convection between fixed subassembly and the main joist, again through locating the outside on partition layer with fixed subassembly not contact with the main joist of partition layer inboard can the heat-proof bridge to can improve the holistic anti-condensation effect of exposed frame curtain wall system. Specifically, the dew condensation preventing exposed frame curtain wall system of the utility model forms a partition layer by respectively abutting two wing edges of the main body part of the heat insulation strip with the hollow glue layers of the two glass plates, so as to prevent air convection between the external pressure block and the main keel; the outer pressing block is fixedly connected with the connecting piece through the fastening piece which sequentially penetrates through the outer pressing block, the mounting cavity and the connecting piece, but the fastening piece does not penetrate through the partition layer, so that the main keel on the inner side of the partition layer is not in contact with the outer pressing block on the outer side of the partition layer, and a heat-proof bridge is formed; and finally, the outer pressing block is hermetically connected with the two glass plates and the main keel is hermetically connected with the two glass plates through the multi-tooth sealing rubber strip with the flash, so that a good sealing effect is achieved. The utility model discloses an anti-condensation open frame curtain system has solved the current open frame curtain in market because outer briquetting contacts the hot bridge and the air convection problem that produce with the main joist and the outer briquetting and air convection problem from anti-heat bridge, air convection, leakproofness tripartite, has effectively improved the anti-condensation performance of open frame curtain system.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An anti-dewfall exposed frame curtain wall system is characterized by comprising
A main keel;
the glass plate is arranged on the outer side of the main keel;
the fixing assembly is arranged on the outer side of the glass plate; and
the heat insulation strip comprises a main body part, and a first connecting part and a second connecting part which respectively extend out from two sides of the main body part, wherein the first connecting part and the second connecting part of the heat insulation strip are respectively connected with the main keel and the fixing component so that the heat insulation strip is fixed between the main keel and the fixing component, and two wing edges of the main body part of the heat insulation strip are respectively abutted with the two glass plates so as to form a partition layer; the main keel is positioned on the inner side of the partition layer, and the fixing assembly is positioned on the outer side of the partition layer.
2. The anti-condensation exposed frame curtain wall system according to claim 1, wherein the glass plates are double glass plates, and the two fins of the main body portion of the heat insulating strip are respectively in contact with the hollow adhesive layers of the two glass plates.
3. The anti-condensation exposed frame curtain wall system according to claim 1, wherein a convex portion facing the heat insulation strip is arranged on the main keel, a first embedding groove is formed in the convex portion, and a first connecting portion of the heat insulation strip is embedded in the first embedding groove and connected with the main keel in a nested manner.
4. The anti-condensation exposed frame curtain wall system according to claim 1, wherein the fixing assembly comprises an outer pressing block and a connecting piece, the connecting piece is fixedly installed on the outer pressing block through a clamping hook structure by means of a fastener, a second embedding groove is formed in the connecting piece, and a second connecting portion of the heat insulation strip is embedded in the second embedding groove and is connected with the connecting piece in a nested mode.
5. The anti-condensation exposed frame curtain wall system according to claim 4, wherein two first hooks are arranged on the outer side of the connecting piece, two second hooks adapted to the two first hooks are arranged on the inner side of the outer pressing block, when the two first hooks are engaged with the two second hooks, an installation cavity is formed between the connecting piece and the outer pressing block, and the fastening piece sequentially penetrates through the outer pressing block, the installation cavity and the connecting piece, so that the outer pressing block is fixedly connected with the connecting piece.
6. The anti-condensation exposed frame curtain wall system according to claim 4, wherein the fixing assembly further comprises a cover buckle, and the cover buckle is arranged on the outer side of the outer pressing block.
7. The anti-condensation exposed frame curtain wall system according to claim 4, wherein a first sealing groove facing the glass plate is formed in the outer pressing block, a first sealing rubber strip is clamped in the first sealing groove, and the outer pressing block is connected with the glass plate in a sealing mode through the first sealing rubber strip.
8. The anti-condensation exposed frame curtain wall system according to claim 7, wherein a second sealing groove facing the glass plate is formed in the main keel, a second sealing rubber strip is arranged in the second sealing groove, and the main keel is in sealing connection with the glass plate through the second sealing rubber strip.
9. The anti-condensation exposed frame curtain wall system according to claim 8, wherein the first sealing rubber strip and the second sealing rubber strip are both multi-tooth sealing rubber strips with flanges.
10. The anti-condensation exposed frame curtain wall system according to claim 1, wherein the glass plate is LOW-E coated glass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921275969.4U CN210482683U (en) | 2019-08-06 | 2019-08-06 | Dew-proof exposed frame curtain wall system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921275969.4U CN210482683U (en) | 2019-08-06 | 2019-08-06 | Dew-proof exposed frame curtain wall system |
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| CN210482683U true CN210482683U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374237A (en) * | 2019-08-06 | 2019-10-25 | 深圳市三鑫科技发展有限公司 | Anti-condensation exposed frame curtain wall system |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374237A (en) * | 2019-08-06 | 2019-10-25 | 深圳市三鑫科技发展有限公司 | Anti-condensation exposed frame curtain wall system |
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