CN112900591A - Construction pavement drainage equipment applied to construction site - Google Patents
Construction pavement drainage equipment applied to construction site Download PDFInfo
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- CN112900591A CN112900591A CN202110062504.6A CN202110062504A CN112900591A CN 112900591 A CN112900591 A CN 112900591A CN 202110062504 A CN202110062504 A CN 202110062504A CN 112900591 A CN112900591 A CN 112900591A
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- cylinder
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0404—Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sewage (AREA)
Abstract
The invention discloses construction pavement drainage equipment applied to a construction site, which comprises a drainage well, wherein the top of the drainage well is provided with a well cover, the inner wall of the drainage well is embedded with a protective enclosing plate capable of moving up and down, the lower side of the protective enclosing plate is connected with a first spring, the lower end of the first spring is connected to the drainage well, the inner side of the protective enclosing plate is provided with an installation cylinder, the top of the inner side of the installation cylinder is provided with a first filter screen, a movable plate matched with the installation cylinder is arranged in the installation cylinder, the middle part of the lower end of the movable plate is fixedly connected with a guide rod, and the guide rod penetrates through the bottom of the installation cylinder and is in sliding connection with the installation cylinder. The invention has reasonable structural design, can effectively remove coarse and fine dirt in the sewage of the construction site, can adsorb and collect iron scraps in the sewage, effectively reduces the difficulty of wastewater recovery, reduces garbage and harmful substances in the sewage, has strong environmental protection property and is beneficial to popularization.
Description
Technical Field
The invention relates to the technical field of drainage of construction sites, in particular to construction pavement drainage equipment applied to the construction sites.
Background
Building construction mainly includes foundation engineering construction, major structure construction, roofing engineering construction, decorates engineering construction etc. can leave over some iron fillings and the waste product of light weight on building site's the construction road surface often, and in rainy day or washing wastewater can be washed the filth to the sewer, the filth can cause huge puzzlement to the recovery of waste water in the sewer.
The current general installation filter screen that is direct simple in the well head of all filters, filters the filth and cuts and leave, but current filth filter effect is not good enough, and is difficult to get rid of, separate the iron fillings impurity in the sewage, consequently, designs a construction road surface drainage equipment who is applied to building site now.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides construction road surface drainage equipment applied to a construction site.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction road surface drainage device applied to a building site comprises a drainage well, wherein a well cover is arranged at the top of the drainage well, a protective enclosing plate capable of moving up and down is embedded on the inner wall of the drainage well, a first spring is connected to the lower side of the protective enclosing plate, the lower end of the first spring is connected to the drainage well, an installation cylinder is arranged on the inner side of the protective enclosing plate, a first filter screen is arranged at the top of the inner side of the installation cylinder, a moving plate matched with the installation cylinder is arranged inside the installation cylinder, a guide rod is fixedly connected to the middle of the lower end of the moving plate, penetrates through the bottom of the installation cylinder and is in sliding connection with the installation cylinder, a second spring is sleeved on the guide rod, a lower magnetic ring is fixedly connected to the edge of the upper end of the moving plate, an upper magnetic ring which is positioned above the lower magnetic ring and absorbs the lower magnetic ring is fixed on the inner wall of the installation cylinder, the bottom both sides of installation section of thick bamboo all are equipped with magnet mechanism, installation bobbin base portion is connected with fine filter mechanism.
Preferably, thin filtering mechanism is including setting up the second filter screen in the installation section of thick bamboo below, fixed the cup jointing has solid fixed ring on the outer wall of installation section of thick bamboo, the second filter screen passes through connecting bolt to be fixed at solid fixed ring downside.
Preferably, the iron attracting mechanism comprises a support fixedly connected to the lower end of the mounting cylinder, a magnetic cylinder is rotatably connected to the support, and the outer side of the magnetic cylinder is located below a lower outlet of the water outlet flat pipe.
Preferably, the bobbin shaft tip cover of magnetism section of thick bamboo is equipped with the gear, and the one-way bearing of gear and magnetism section of thick bamboo junction installation, the lower extreme fixedly connected with movable rod of movable plate, the movable rod runs through an installation section of thick bamboo, and the lower extreme fixedly connected with rack of movable rod, rack toothing is inboard at the gear, the interior bottom of second filter screen is equipped with collects the net, the top both sides of collecting the net all are equipped with the doctor-bar with the contact of magnetism section of thick bamboo.
Preferably, be equipped with the spacing ring that is used for fixed collection net on the interior diapire of second filter screen, it is inboard that collection net is located the spacing ring.
Preferably, the top of the moving plate is of a conical surface structure.
Preferably, the two sides of the top of the mounting cylinder are provided with lifting rings.
The invention has the beneficial effects that:
carry out coarse filtration to the sewage that gets into in the drain well through setting up first filter screen, get rid of great filth, impurity in the sewage.
Through setting up the fine filtration mechanism, inhale the iron mechanism, water after the coarse filtration gets into and accumulates in the installation section of thick bamboo, when accumulating more volume, when the gravity of accumulating water surpassed the suction of magnetic ring and lower magnetic ring, the movable plate moves down to the interior bottom of installation section of thick bamboo, water evenly flows through the play flat pipe this moment on the surface of magnetic cylinder, adsorb the collection through the iron fillings of magnetic cylinder in to sewage, sewage leaks down again and carries out the fine filtration through the second filter screen, get rid of less filth, impurity, after sewage spills the installation section of thick bamboo, the elasticity of second spring supports the movable plate and shifts up, make go up the magnetic ring, lower magnetic ring adsorbs again.
Through setting up movable rod, rack, gear, doctor-bar, collection net, when the movable plate moves down, can drive movable rod, rack move down drive gear and rotate, can drive the magnetism section of thick bamboo and rotate, the doctor-bar contacts with the magnetism section of thick bamboo, can scrape down the iron fillings that adsorb on the magnetism section of thick bamboo surface to collect through collecting the net.
The invention has reasonable structural design, can effectively remove coarse and fine dirt in the sewage of the construction site, can adsorb and collect iron scraps in the sewage, effectively reduces the difficulty of wastewater recovery, reduces garbage and harmful substances in the sewage, has strong environmental protection property and is beneficial to popularization.
Drawings
FIG. 1 is a schematic structural view of a construction pavement drainage apparatus applied to a construction site according to the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the construction pavement drainage device applied to a construction site.
In the figure: the drainage well comprises a drainage well 1, a well cover 2, a protective enclosing plate 3, a first spring 4, an installation cylinder 5, a first filter screen 6, an upper magnetic ring 7, a lower magnetic ring 8, a movable plate 9, a guide rod 10, a second spring 11, a fixed ring 12, a connecting bolt 13, a second filter screen 14, a flat water outlet pipe 15, a support 16, a magnetic cylinder 17, a movable rod 18, a rack 19, a gear 20, a scraper 21, a collecting net 22 and a limiting ring 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1, a construction road surface drainage device applied to a construction site comprises a drainage well 1, wherein a well cover 2 is arranged at the top of the drainage well 1, a protective enclosing plate 3 capable of moving up and down is embedded on the inner wall of the drainage well 1, a first spring 4 is connected to the lower side of the protective enclosing plate 3, the lower end of the first spring 4 is connected to the drainage well 1, an installation cylinder 5 is arranged on the inner side of the protective enclosing plate 3, the protective enclosing plate 3 and the first spring 4 are arranged, the protective enclosing plate 3 can move up under the action of the first spring 4 when the installation cylinder 5 is taken out, so as to enclose and protect the well mouth of the drainage well 1, prevent waste water and impurities from directly falling into the drainage well 1, a first filter screen 6 is arranged at the top of the inner side of the installation cylinder 5, a movable plate 9 matched with the installation cylinder 5 is arranged inside the installation cylinder 5, the top of the conical surface 9 is of a structure, so that, the middle part of the lower end of the moving plate 9 is fixedly connected with a guide rod 10, the guide rod 10 penetrates through the bottom of the mounting cylinder 5 and is in sliding connection with the mounting cylinder 5, a second spring 11 is sleeved on the guide rod 10, the edge of the upper end of the moving plate 9 is fixedly connected with a lower magnetic ring 8, an upper magnetic ring 7 which is positioned above the lower magnetic ring 8 and is attracted with the lower magnetic ring 8 is fixed on the inner wall of the mounting cylinder 5, two side walls of the mounting cylinder 5 close to the bottom are both connected with water outlet flat pipes 15, filtered water enters the mounting cylinder 5 to be accumulated, when the gravity of the accumulated water exceeds the suction force of the upper magnetic ring 7 and the lower magnetic ring 8 when more water is accumulated, the moving plate 9 moves downwards to the inner bottom of the mounting cylinder 5, at the moment, the water uniformly flows through the surfaces of the magnetic cylinders 17 through the water outlet flat pipes 15, scrap iron in the sewage is adsorbed and collected through the magnetic cylinders 17, the, after sewage spills installation section of thick bamboo 5, the elasticity of second spring 11 supports movable plate 9 and shifts up, make and go up magnetic ring 7, lower magnetic ring 8 adsorbs again, the bottom both sides of installation section of thick bamboo 5 all are equipped with magnet attraction mechanism, magnet attraction mechanism includes support 16 of fixed connection at installation section of thick bamboo 5 lower extreme, it is connected with magnetic cylinder 17 to rotate on the support 16, magnetic cylinder 17's the outside is located the below of the lower export of play flat pipe 15, move down through the intermittent type of movable plate 9, can make the steady surface of flowing through magnetic cylinder 17 of sewage, can make magnetic cylinder 17 more fully adsorb the iron fillings in the sewage, installation section of thick bamboo 5 bottom is connected with the fine filtration mechanism.
According to the invention, the fine filtering mechanism comprises a second filter screen 14 arranged below the mounting cylinder 5, a fixing ring 12 is fixedly sleeved on the outer wall of the mounting cylinder 5, the second filter screen 14 is fixed on the lower side of the fixing ring 12 through a connecting bolt 13, and the second filter screen 14 can be quickly disassembled by disassembling the connecting bolt 13, so that the cleaning is convenient.
Further, the top both sides of an installation section of thick bamboo 5 all are equipped with the lift ring, are convenient for take out 5 whole drainage well 1 with an installation section of thick bamboo, and then are convenient for clear up first filter screen 6, second filter screen 14 to will collect the iron fillings clearance of collecting in the net 22 and go out.
The working principle is as follows: sewage flows into the drainage well 1 through the well lid 2, the sewage entering the drainage well 1 is roughly filtered through the first filter screen 6 to remove larger dirt and impurities in the sewage, the roughly filtered water enters the installation cylinder 5 to be accumulated, when more amount of accumulated water exceeds the suction force of the upper magnetic ring 7 and the lower magnetic ring 8, the movable plate 9 moves downwards to the inner bottom of the installation cylinder 5, the water uniformly flows through the surface of the magnetic cylinder 17 through the water outlet flat pipe 15 at the moment, scrap iron in the sewage is adsorbed and collected through the magnetic cylinder 17, the sewage further leaks downwards and is finely filtered through the second filter screen 14 to remove smaller dirt and impurities, after the sewage leaks out of the installation cylinder 5, the movable plate 9 is propped upwards by the elastic force of the second spring 11, so that the upper magnetic ring 7 and the lower magnetic ring 8 are re-adsorbed, the intermittent downwards movement of the movable plate 9 is realized, further, the drainage is stabilized, and the scrap iron is adsorbed by the magnetic cylinder 17 more sufficiently, And (4) the stability is stable.
Example two
Referring to fig. 2, the present embodiment is more advantageous than the first embodiment in that a gear 20 is sleeved on an end of a shaft of the magnetic cylinder 17, a one-way bearing is installed at a connection portion of the gear 20 and the magnetic cylinder 17, a movable rod 18 is fixedly connected to a lower end of the movable plate 9, the movable rod 18 penetrates through the installation cylinder 5, a rack 19 is fixedly connected to a lower end of the movable rod 18, the rack 19 is engaged with an inner side of the gear 20, a collection net 22 is disposed at an inner bottom portion of the second filter screen 14, two sides of a top portion of the collection net 22 are both provided with scraping blades 21 contacting the magnetic cylinder 17, a limiting ring 23 for fixing the collection net 22 is disposed on an inner bottom wall of the second filter screen 14, and the collection.
When the magnetic cylinder cleaning machine works, in the process that the moving plate 9 moves downwards, the movable rod 18 and the rack 19 are driven to move downwards to drive the gear 20 to rotate, the magnetic cylinder 17 can be driven to rotate, the scraping piece 21 is in contact with the magnetic cylinder 17, and scrap iron adsorbed on the surface of the magnetic cylinder 17 can be scraped and collected through the collecting net 22.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. The construction pavement drainage equipment applied to the construction site comprises a drainage well (1) and is characterized in that a well cover (2) is arranged at the top of the drainage well (1), a protective enclosing plate (3) capable of moving up and down is embedded on the inner wall of the drainage well (1), a first spring (4) is connected to the lower side of the protective enclosing plate (3), the lower end of the first spring (4) is connected to the drainage well (1), an installation cylinder (5) is arranged on the inner side of the protective enclosing plate (3), a first filter screen (6) is arranged at the top of the inner side of the installation cylinder (5), a movable plate (9) matched with the installation cylinder (5) is arranged inside the installation cylinder (5), a guide rod (10) is fixedly connected to the middle part of the lower end of the movable plate (9), and the guide rod (10) penetrates through the bottom of the installation cylinder (5) and is in sliding connection with the installation cylinder (5), the magnetic filter is characterized in that a second spring (11) is sleeved on the guide rod (10), a lower magnetic ring (8) is fixedly connected to the edge of the upper end of the movable plate (9), an upper magnetic ring (7) which is located above the lower magnetic ring (8) and mutually attracted with the lower magnetic ring (8) is fixed to the inner wall of the installation cylinder (5), two side walls, close to the bottom, of the installation cylinder (5) are respectively connected with a water outlet flat pipe (15), iron absorbing mechanisms are arranged on two sides of the bottom of the installation cylinder (5), and a fine filtering mechanism is connected to the bottom of the installation cylinder (5).
2. The construction road surface drainage device applied to the construction site is characterized in that the fine filtering mechanism comprises a second filter screen (14) arranged below the mounting cylinder (5), a fixing ring (12) is fixedly sleeved on the outer wall of the mounting cylinder (5), and the second filter screen (14) is fixed on the lower side of the fixing ring (12) through a connecting bolt (13).
3. The construction road surface drainage device applied to the construction site is characterized in that the iron absorption mechanism comprises a support (16) fixedly connected to the lower end of the mounting cylinder (5), a magnetic cylinder (17) is rotatably connected to the support (16), and the outer side of the magnetic cylinder (17) is positioned below the lower outlet of the flat water outlet pipe (15).
4. The construction road surface drainage equipment applied to the construction site according to claim 3, wherein a gear (20) is sleeved on the end part of a cylinder shaft of the magnetic cylinder (17), a one-way bearing is installed at the joint of the gear (20) and the magnetic cylinder (17), a movable rod (18) is fixedly connected with the lower end of the movable plate (9), the movable rod (18) penetrates through the installation cylinder (5), a rack (19) is fixedly connected with the lower end of the movable rod (18), the rack (19) is meshed on the inner side of the gear (20), a collection net (22) is arranged at the inner bottom of the second filter screen (14), and scraping pieces (21) contacting with the magnetic cylinder (17) are arranged on two sides of the top of the collection net (22).
5. A construction road surface drainage apparatus for a construction site according to claim 4, wherein a stopper ring (23) for fixing the collection net (22) is provided on an inner bottom wall of the second filter net (14), and the collection net (22) is located inside the stopper ring (23).
6. A construction road surface drainage apparatus for a construction site as claimed in claim 1, wherein the top of the moving plate (9) has a conical structure.
7. A construction road surface drainage apparatus for a construction site as claimed in claim 1, wherein the mounting cylinder (5) is provided with a lifting ring at both sides of the top thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062504.6A CN112900591B (en) | 2021-01-18 | 2021-01-18 | Construction pavement drainage equipment applied to construction site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062504.6A CN112900591B (en) | 2021-01-18 | 2021-01-18 | Construction pavement drainage equipment applied to construction site |
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| Publication Number | Publication Date |
|---|---|
| CN112900591A true CN112900591A (en) | 2021-06-04 |
| CN112900591B CN112900591B (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110062504.6A Active CN112900591B (en) | 2021-01-18 | 2021-01-18 | Construction pavement drainage equipment applied to construction site |
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| Country | Link |
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| CN (1) | CN112900591B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562010A (en) * | 2022-03-28 | 2022-05-31 | 南京林业大学 | A raindrop pipe breaking off and connecting energy dissipation facility for sponge city greenery patches |
| CN116177834A (en) * | 2023-04-20 | 2023-05-30 | 西南科技大学 | Method for pyrolysis treatment of oily sludge solid waste by utilizing microwave absorbent |
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| CN101352629A (en) * | 2007-07-25 | 2009-01-28 | Dps环保技术有限公司 | Water treatment system and water treatment device |
| TWM487145U (en) * | 2014-04-16 | 2014-10-01 | Nian Hung Electric Ind Co Ltd | Wet type magnetic separator |
| CN204170930U (en) * | 2014-08-27 | 2015-02-25 | 郑州科威耐火材料有限公司 | The Easy dismountable material screening of resistance to material scrap iron removing device |
| US20160221853A1 (en) * | 2014-02-04 | 2016-08-04 | Steven Leslie Cort | Water clarification and sludge dewatering systems |
| CN108894305A (en) * | 2018-07-19 | 2018-11-27 | 林旭清 | A kind of construction road surface drainage device applied to construction site |
| CN210645459U (en) * | 2019-07-04 | 2020-06-02 | 东霖精密科技有限公司 | Vacuum type waste liquid filter |
| CN211035497U (en) * | 2019-10-14 | 2020-07-17 | 姚元兵 | Sedimentation device for sewage treatment |
| CN212632804U (en) * | 2020-06-28 | 2021-03-02 | 滨州钰城节能建材有限公司 | Feeding device for slag brick making |
-
2021
- 2021-01-18 CN CN202110062504.6A patent/CN112900591B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352629A (en) * | 2007-07-25 | 2009-01-28 | Dps环保技术有限公司 | Water treatment system and water treatment device |
| US20160221853A1 (en) * | 2014-02-04 | 2016-08-04 | Steven Leslie Cort | Water clarification and sludge dewatering systems |
| TWM487145U (en) * | 2014-04-16 | 2014-10-01 | Nian Hung Electric Ind Co Ltd | Wet type magnetic separator |
| CN204170930U (en) * | 2014-08-27 | 2015-02-25 | 郑州科威耐火材料有限公司 | The Easy dismountable material screening of resistance to material scrap iron removing device |
| CN108894305A (en) * | 2018-07-19 | 2018-11-27 | 林旭清 | A kind of construction road surface drainage device applied to construction site |
| CN210645459U (en) * | 2019-07-04 | 2020-06-02 | 东霖精密科技有限公司 | Vacuum type waste liquid filter |
| CN211035497U (en) * | 2019-10-14 | 2020-07-17 | 姚元兵 | Sedimentation device for sewage treatment |
| CN212632804U (en) * | 2020-06-28 | 2021-03-02 | 滨州钰城节能建材有限公司 | Feeding device for slag brick making |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562010A (en) * | 2022-03-28 | 2022-05-31 | 南京林业大学 | A raindrop pipe breaking off and connecting energy dissipation facility for sponge city greenery patches |
| CN114562010B (en) * | 2022-03-28 | 2023-10-31 | 南京林业大学 | A rain drop pipe outage energy dissipation facility for sponge urban green space |
| CN116177834A (en) * | 2023-04-20 | 2023-05-30 | 西南科技大学 | Method for pyrolysis treatment of oily sludge solid waste by utilizing microwave absorbent |
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| Publication number | Publication date |
|---|---|
| CN112900591B (en) | 2022-12-09 |
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Effective date of registration: 20221121 Address after: No. 48, Minhui Road, Minheji Town, Wuzhen Town, Tongxiang City, Jiaxing City, Zhejiang Province, 314000 Applicant after: ZHEJIANG BAOSEN CONSTRUCTION CO.,LTD. Address before: 200000 Room 385, Floor 3, Building 3, No.135 Guowei Road, Yangpu District, Shanghai Shanghai Jiangdu Construction Engineering Co.,Ltd. Applicant before: Xu Chenliang |
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