CN102162290A - Support structure for photovoltaic (PV) system - Google Patents
Support structure for photovoltaic (PV) system Download PDFInfo
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- CN102162290A CN102162290A CN2011100406331A CN201110040633A CN102162290A CN 102162290 A CN102162290 A CN 102162290A CN 2011100406331 A CN2011100406331 A CN 2011100406331A CN 201110040633 A CN201110040633 A CN 201110040633A CN 102162290 A CN102162290 A CN 102162290A
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- connector
- purlin
- following
- fixed
- braced structures
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- 238000005452 bending Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Photovoltaic Devices (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention provides a support structure for a photovoltaic (PV) system. The support structure comprises an auxiliary frame, upper purlins, lower purlins, upper connecting pieces, lower connecting pieces and connecting plates, wherein, the auxiliary frame is fixedly connected on the upper purlins and the lower purlins; the upper purlins are fixedly connected on the upper connecting pieces; the lower purlins are fixedly connected on the lower connecting pieces; and the connecting plates are inserted between the upper purlins and the lower purlins. The support structure provided by the invention has the advantages of meeting different requirements of different places for an inclined angle facing to the sun of the auxiliary frame of a PV solar panel, improving the operating efficiency of a PV solar battery, realizing multiple functions of sun shading, energy conservation and indoor light adjustment as well as large-scale quantity production, ensuring precision and appearance of components, enhancing weathering resistance, prolonging service life, saving materials without conventional energy consumption and moving mechanical components, avoiding pollution and noise, and being very convenient for assembly, maintenance and disassembly, thus greatly lowering cost and effectively improving utilization ratio of a PV curtain wall in a building.
Description
Technical field
The present invention relates to the braced structures of photovoltaic-architecture-integral (BIPV), relate in particular to a kind of braced structures of curtain wall photovoltaic system.
Background technology
Countries in the world are all dropped into huge fund and are carried out the Application of Solar Energy Study on Technology in recent years; obtained very big technological progress; along with the rising of cost of electricity-generating and people pay attention to day by day to environmental protection; people successfully have been applied to building field to solar energy power generating; BIPV (Building Integrated PV) that Here it is (BIPV), present this technology generally has been used for the curtain buildings structure.
Because BIPV itself is exactly the space enclosing structure of building, so the design of support system can directly have influence on the building performance of whole system, as: aesthetic property, safety, operability, watertightness, tightness or the like.Equally, consider production, the installation of this system, the cost of maintenance, so that this cleaning, the most promising renewable energy resource enter common people house in the world.
The braced structures of photovoltaic system mainly is at ground or roof among the existing BIPV, at the braced structures of building wall also seldom, and most of braced structuress all can only realize the Plane Installation of solar panel, can not regulate the angle of solar panel according to the illumination characteristics of each department, hinder giving full play to of solar cell working efficient, do not consider that the shaded effects of photovoltaic solar cell plate and outward appearance beautify yet, realize one-object-many-purposes.In unified design, large-scale production, standard transportation, standard assembling, reclaim again with, economical with materials and aspect such as reduce cost and all be restricted.
Therefore, prior art awaits improving and development.
Summary of the invention
The object of the present invention is to provide a kind of inclination angle that both can adjust solar panel Chaoyang, but the braced structures of the photovoltaic system of sunshade again.
Technical scheme of the present invention is as follows:
A kind of braced structures of photovoltaic system, comprise secondary frame, last purlin, following purlin, upper connector and following connector, described secondary frame is connected and fixed on purlin and the following purlin, the described purlin of going up is connected and fixed on the upper connector, described purlin down is connected and fixed on down on the connector, wherein, also comprise the junction plate that inserts described upward purlin and following purlin.
The braced structures of described photovoltaic system, wherein, described junction plate is the bending junction plate.
The braced structures of described photovoltaic system, wherein, described upper connector comprises first connector and second connector, following connector comprises first connector and the 3rd connector; Be connected and fixed by screw between first connector of described upper connector and second connector, be connected and fixed by screw between first connector of described connector down and the 3rd connector.
The braced structures of described photovoltaic system, wherein, described first connector comprises buried plate and otic placode.
The braced structures of described photovoltaic system, wherein, described buried plate and otic placode are one.
The braced structures of described photovoltaic system, wherein, an end of described second connector and the 3rd connector is C type structure.
The braced structures of described photovoltaic system, wherein, the described purlin of going up all has hollow structure with following purlin.
The braced structures of described photovoltaic system, wherein, described inside and outside both sides of going up purlin and following purlin are provided with screw recess.
The braced structures of described photovoltaic system, wherein, all be connected and fixed between described secondary frame and last purlin, secondary frame and following purlin, last purlin and second connector, following purlin and the 3rd connector, upper connector and junction plate, junction plate and the following connector by screw.
A kind of mounting method of braced structures of photovoltaic system, it may further comprise the steps:
A, imbed body of wall after the buried plate of first connector with expansion bolt;
B, be connected and fixed on the otic placode of first connector with key screw second connector and the 3rd connector;
C, the C type end of second connector and the 3rd connector is slipped into purlin and the inboard screw recess of following purlin, insert the junction plate of bending at last purlin and following purlin corner, again with screw successively junction plate and upper connector, junction plate and down repeatedly fitting, upper connector and last purlin, descend connector and following purlin to be connected and fixed;
D, the bolt that will have a pad slip into purlin and following purlin outside screw recess, with bolt and pad the secondary frame that the photovoltaic solar cell plate is housed are connected and fixed on purlin and the following purlin again.
Adopt such scheme, the present invention not only can make full use of the building wall space of planes and carry out solar electrical energy generation, and can adjust indoor light and temperature, can satisfy simultaneously different local different requirements to inclination angle, photovoltaic solar cell plate Chaoyang, improve the generating efficiency of photovoltaic system, realize one-object-many-purposes; Simple in structure because of the present invention in addition; can realize the scale batch process; guarantee the precision and the outward appearance of member, improve weatherability and application life, saved material; there is not conventional energy consumption; no moving mechanical part, pollution-free, noiseless; assembling, maintenance and dismounting are all very convenient, greatly reduce cost.
Description of drawings
Fig. 1 is the braced structures schematic perspective view of photovoltaic system of the present invention;
Fig. 2 is the enlarged drawing of A part among Fig. 1;
Fig. 3 is the enlarged drawing of B part among Fig. 1;
Fig. 4 is the enlarged drawing of C part among Fig. 1;
Fig. 5 is the enlarged drawing of D part among Fig. 1;
Fig. 6 is the floor map of Fig. 5.
The specific embodiment
The invention provides the braced structures of photovoltaic system, clearer, clear and definite for making purpose of the present invention, technical scheme and effect, below with reference to accompanying drawing and give an actual example that the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Shown in Fig. 1-6, the braced structures of a kind of photovoltaic system of the present invention, comprise secondary frame 8, last purlin 54, following purlin 55, upper connector A and following connector C, described upper connector A comprises first connector 3 and second connector 41, and described connector C down comprises first connector 3 and the 3rd connector 42; Described first connector 3 comprises buried plate 31 and otic placode 32, and described buried plate 31 and otic placode 32 are preferably integrated design processing, and an end of described second connector 41 and the 3rd connector 42 is C type structure.
Described secondary frame 8 is connected and fixed on purlin 54 and the following purlin 55, and the described purlin 54 of going up is connected and fixed on the upper connector A, and described purlin 55 down is connected and fixed on down on the connector C; Described first connector 3 is connected and fixed on the body of wall 1, described going up between purlin 54 and the following purlin 55 is inserted with junction plate 56, described junction plate 56 is for being preferably the junction plate 56 of bending, its bending angle is adjusted according to regional illumination characteristics or shaded effects needs, thereby improve photovoltaic solar cell plate 9 extinction effects, improve the efficient of photovoltaic generation.
All be connected and fixed between described secondary frame 8 and last purlin 54, secondary frame 8 and following purlin 55, last purlin 54 and second connector 41, following purlin 55 and the 3rd connector 42, upper connector A and junction plate 56, junction plate 56 and the following connector C, make things convenient for the installation and removal of whole system by screw.
As Fig. 2 and shown in Figure 4, upper connector A to be connected and fixed mode as follows, at first, will imbed body of wall 1 behind the expansion bolt 71, by nut 73 and pad 72 first connector 3 is fixed on the body of wall 1; Secondly, second connector 41 is connected and fixed on the otic placode 32 of first connector 3 by bolt 71, pad 72 and nut 73, the C type end of second connector 41 is vertically slipped in the inboard screw recess 53 of purlin 54, be connected and fixed on the purlin 54 with machine screws 74; Equally, the mode that is connected and fixed of following connector C, the 3rd connector 42 also is fastened on the otic placode 32 of first connector 3, and the C type end of the 3rd connector 42 vertically slips into down the inboard screw recess 53 of purlin 55, is connected and fixed on down on the purlin 55 with machine screws 74.
The length preferred version of described second connector 41 firmly to be connected on the purlin 54 and first connector 3, can also be saved material simultaneously for short as far as possible, alleviates the weight of braced structures; The length of the 3rd connector 42 then can be done suitably to adjust according to the length of optimum tilt angle, junction plate 56 angle bending and the following purlin 55 of photovoltaic solar cell plate 9 needs, to improve the generating efficiency of photovoltaic solar, the intensity of illumination that adjustment glass window 2 is subjected to is also improved interior temperature.
As shown in Figure 3, the described purlin 54 of going up all has square hollow structure 52 with following purlin 55, described inside and outside both sides of going up purlin 54 and following purlin 55 are provided with screw recess, after in the square hollow structure 52 of last purlin 54 and following purlin 55, inserting junction plate 56, be connected and fixed by bolt 71, pad 72 and nut 73, described junction plate 56 has strengthened the loading capacity of last purlin 54 and following purlin 55.
As shown in Figure 5, solar panel 9 is fastened in the described secondary frame 8, when described secondary frame 8 is connected and fixed on purlin 54 and following purlin 55, to slip into the described outside screw recess 51 that goes up purlin 54 and following purlin 55 earlier with the bolt 71 of pad 72, and insert secondary frame 8 backs and be connected and fixed with pad 72 and nut 73; Described secondary frame 8 is preferably the secondary frame 8 of aluminium alloys, the described purlin 54 of going up is preferably purlin 54 on the aluminium alloys, described purlin 55 down is preferably purlin 55 under the aluminium alloys, described junction plate 56 is preferably steel plate junction plate 56, and described first connector 3, second connector 41 and the 3rd connector 42 all are preferably the steel plate connector.
The mounting method of the braced structures of described photovoltaic system, it may further comprise the steps:
A, imbed body of wall 1 after the buried plate 31 of first connector 3 with expansion bolt 70;
B, be connected and fixed on the otic placode 32 of first connector 3 with key screw second connector 41 and the 3rd connector 42;
C, the C type end of second connector 41 and the 3rd connector 42 is slipped into purlin 54 and following purlin 55 inboard screw recess 53, insert the junction plate 56 of bending at last purlin 54 and following purlin 55 corners, successively upper connector A and last purlin 54, following connector C and following purlin 55 are connected and fixed with screw again;
D, the bolt 71 that will have a pad 72 slip into purlin 54 and following purlin 55 outside screw recess 51, with bolt 71 and pad 72 the secondary frame 8 that photovoltaic solar cell plate 9 is housed are connected and fixed on purlin 54 and the following purlin 55 again.
Because of each modular construction of whole braced structures is simple, can make standard component; All fix between the parts, need not, can realize the scale batch process, guarantee the machining accuracy and the good appearance of member, improve weatherability and application life by welding or hinge by screw; When saving material, there is not conventional energy consumption, no moving mechanical part, pollution-free, noiseless, assembling, maintenance and dismounting are all very convenient, greatly reduce material cost, processing cost, assembly cost and recovery and use cost again, thereby real the realization simply is suitable for environmental protection.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. the braced structures of a photovoltaic system, comprise secondary frame, last purlin, following purlin, upper connector and following connector, described secondary frame is connected and fixed on purlin and the following purlin, the described purlin of going up is connected and fixed on the upper connector, described purlin down is connected and fixed on down on the connector, it is characterized in that, also comprise and insert the described junction plate of going up purlin and following purlin.
2. the braced structures of photovoltaic system according to claim 1 is characterized in that, described junction plate is the bending junction plate.
3. the braced structures of photovoltaic system according to claim 1 is characterized in that, described upper connector comprises first connector and second connector, and following connector comprises first connector and the 3rd connector; Be connected and fixed by screw between first connector of described upper connector and second connector, be connected and fixed by screw between first connector of described connector down and the 3rd connector.
4. the braced structures of photovoltaic system according to claim 3 is characterized in that, described first connector comprises buried plate and otic placode.
5. the braced structures of photovoltaic system according to claim 4 is characterized in that, described buried plate and otic placode are one.
6. the braced structures of photovoltaic system according to claim 3 is characterized in that, an end of described second connector and the 3rd connector is C type structure.
7. the braced structures of photovoltaic system according to claim 1 is characterized in that, the described purlin of going up all has hollow structure with following purlin.
8. the braced structures of photovoltaic system according to claim 1 is characterized in that, described inside and outside both sides of going up purlin and following purlin are provided with screw recess.
9. the braced structures of photovoltaic system according to claim 3, it is characterized in that, all be connected and fixed between described secondary frame and last purlin, secondary frame and following purlin, last purlin and second connector, following purlin and the 3rd connector, upper connector and junction plate, junction plate and the following connector by screw.
10. the mounting method of the braced structures of a photovoltaic system, it may further comprise the steps:
A, imbed body of wall after the buried plate of first connector with expansion bolt;
B, be connected and fixed on the otic placode of first connector with key screw second connector and the 3rd connector;
C, the C type end of second connector and the 3rd connector is slipped into purlin and the inboard screw recess of following purlin, insert the junction plate of bending at last purlin and following purlin corner, again with screw successively junction plate and upper connector, junction plate and down repeatedly fitting, upper connector and last purlin, descend connector and following purlin to be connected and fixed;
D, the bolt that will have a pad slip into purlin and following purlin outside screw recess, with bolt and pad the secondary frame that the photovoltaic solar cell plate is housed are connected and fixed on purlin and the following purlin again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100406331A CN102162290B (en) | 2011-02-18 | 2011-02-18 | Support structure for photovoltaic (PV) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100406331A CN102162290B (en) | 2011-02-18 | 2011-02-18 | Support structure for photovoltaic (PV) system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102162290A true CN102162290A (en) | 2011-08-24 |
| CN102162290B CN102162290B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100406331A Expired - Fee Related CN102162290B (en) | 2011-02-18 | 2011-02-18 | Support structure for photovoltaic (PV) system |
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| Country | Link |
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| CN (1) | CN102162290B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821778A (en) * | 2014-01-31 | 2015-08-05 | 日轻金Act株式会社 | Stand for solar panel |
| CN108073190A (en) * | 2017-12-31 | 2018-05-25 | 郑州市第建筑工程集团有限公司 | Skyscraper wall solar cell supporting plate link-type regulating device outside window |
| WO2019062728A1 (en) * | 2017-09-26 | 2019-04-04 | 江苏中信博新能源科技股份有限公司 | Photovoltaic assembly fixing component and photovoltaic system |
| CN110409674A (en) * | 2019-07-25 | 2019-11-05 | 重庆名威建筑幕墙工程有限公司 | A kind of photovoltaic energy-saving curtain wall and its construction method |
| CN111851815A (en) * | 2020-07-28 | 2020-10-30 | 汕头大学 | Curtain wall vertical keel support structure |
Citations (4)
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| WO1994000650A1 (en) * | 1992-06-24 | 1994-01-06 | Pms Energie Ag | Roof element |
| CN201311934Y (en) * | 2008-11-21 | 2009-09-16 | 李毅 | Photovoltaic component of solar photovoltaic hollow glass |
| CN101591948A (en) * | 2008-05-29 | 2009-12-02 | 北京环能海臣科技有限公司 | A kind of building material component of heat preservation, heat supply and photovoltaic cell power generation |
| CN202090471U (en) * | 2011-02-18 | 2011-12-28 | 深圳南玻幕墙及光伏工程有限公司 | Supporting structure of photovoltaic system |
-
2011
- 2011-02-18 CN CN2011100406331A patent/CN102162290B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000650A1 (en) * | 1992-06-24 | 1994-01-06 | Pms Energie Ag | Roof element |
| CN101591948A (en) * | 2008-05-29 | 2009-12-02 | 北京环能海臣科技有限公司 | A kind of building material component of heat preservation, heat supply and photovoltaic cell power generation |
| CN201311934Y (en) * | 2008-11-21 | 2009-09-16 | 李毅 | Photovoltaic component of solar photovoltaic hollow glass |
| CN202090471U (en) * | 2011-02-18 | 2011-12-28 | 深圳南玻幕墙及光伏工程有限公司 | Supporting structure of photovoltaic system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821778A (en) * | 2014-01-31 | 2015-08-05 | 日轻金Act株式会社 | Stand for solar panel |
| CN104821778B (en) * | 2014-01-31 | 2017-12-05 | 日轻金Act株式会社 | Solar panel stand |
| WO2019062728A1 (en) * | 2017-09-26 | 2019-04-04 | 江苏中信博新能源科技股份有限公司 | Photovoltaic assembly fixing component and photovoltaic system |
| CN108073190A (en) * | 2017-12-31 | 2018-05-25 | 郑州市第建筑工程集团有限公司 | Skyscraper wall solar cell supporting plate link-type regulating device outside window |
| CN110409674A (en) * | 2019-07-25 | 2019-11-05 | 重庆名威建筑幕墙工程有限公司 | A kind of photovoltaic energy-saving curtain wall and its construction method |
| CN111851815A (en) * | 2020-07-28 | 2020-10-30 | 汕头大学 | Curtain wall vertical keel support structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102162290B (en) | 2013-01-23 |
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Address after: Xinghua Road 518067 Guangdong city of Shenzhen province No. 6 Nanshan District Huajian Arts crafts emporium (also known as the library of the South China Sea) No. 6 Building 406, Room 408, 407 Patentee after: CHINA SOUTH CURTAIN WALL Co.,Ltd. Address before: 518067 Guangdong city of Shenzhen province Nanshan District Shekou Industrial Road No. 2, building 10-11, CSG Technology Patentee before: Shenzhen Lanbo photovoltaic curtain wall and Engineering Co.,Ltd. Address after: 518067 Guangdong city of Shenzhen province Nanshan District Shekou Industrial Road No. 2, building 10-11, CSG Technology Patentee after: Shenzhen Lanbo photovoltaic curtain wall and Engineering Co.,Ltd. Address before: 518067 Guangdong city of Shenzhen province Nanshan District Shekou Industrial Road No. 2, CSG Technology Building 10 floor Patentee before: CHINA SOUTH CURTAIN WALL Co.,Ltd. |
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Denomination of invention: Support structure for photovoltaic (PV) system Effective date of registration: 20131015 Granted publication date: 20130123 Pledgee: Shenzhen high tech investment and financing Company limited by guarantee Pledgor: CHINA SOUTH CURTAIN WALL Co.,Ltd. Registration number: 2013990000748 |
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Owner name: SHENZHEN LANBO LVJIAN GROUP CO., LTD. Free format text: FORMER NAME: CHINA SOUTH CURTAIN WALL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Xinghua Road 518067 Guangdong city of Shenzhen province No. 6 Nanshan District Huajian Arts crafts emporium (also known as the library of the South China Sea) No. 6 Building 406, Room 408, 407 Patentee after: CHINA SUSTAINABLE CONSTRUCTION GROUP Co.,Ltd. Address before: Xinghua Road 518067 Guangdong city of Shenzhen province No. 6 Nanshan District Huajian Arts crafts emporium (also known as the library of the South China Sea) No. 6 Building 406, Room 408, 407 Patentee before: CHINA SOUTH CURTAIN WALL Co.,Ltd. |
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Date of cancellation: 20150112 Granted publication date: 20130123 Pledgee: Shenzhen high tech investment and financing Company limited by guarantee Pledgor: CHINA SUSTAINABLE CONSTRUCTION GROUP Co.,Ltd. Registration number: 2013990000748 |
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Change date: 20150112 Registration number: 2013990000748 Pledgor after: CHINA SUSTAINABLE CONSTRUCTION GROUP Co.,Ltd. Pledgor before: CHINA SOUTH CURTAIN WALL Co.,Ltd. |
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