CN111699888A - Self-shading and dewatering type skylight for glass greenhouse - Google Patents
Self-shading and dewatering type skylight for glass greenhouse Download PDFInfo
- Publication number
- CN111699888A CN111699888A CN202010584430.8A CN202010584430A CN111699888A CN 111699888 A CN111699888 A CN 111699888A CN 202010584430 A CN202010584430 A CN 202010584430A CN 111699888 A CN111699888 A CN 111699888A
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- wall
- window frame
- sliding plug
- water
- symmetrically
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- 239000011521 glass Substances 0.000 title claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 229910052742 iron Inorganic materials 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 14
- 238000005086 pumping Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 8
- 238000005286 illumination Methods 0.000 abstract description 5
- 230000005389 magnetism Effects 0.000 abstract description 3
- 230000008635 plant growth Effects 0.000 abstract description 3
- 230000012010 growth Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/247—Watering arrangements
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/22—Shades or blinds for greenhouses, or the like
- A01G9/222—Lamellar or like blinds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/22—Shades or blinds for greenhouses, or the like
- A01G9/227—Shades or blinds for greenhouses, or the like rolled up during non-use
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
- E04D2013/034—Daylight conveying tubular skylights
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Greenhouses (AREA)
Abstract
The invention discloses a self-shading and water-reducing skylight for a glass greenhouse, which comprises a window frame, wherein two cavities are symmetrically formed in the window frame, the inner walls of the two cavities are rotatably connected with a rotating shaft, shading cloth is wound on the side wall of the rotating shaft, an annular groove is formed in the inner wall of the window frame, two attracted electromagnets are symmetrically and slidably connected to the inner wall of the annular groove, and one end of the shading cloth penetrates through the side wall of the window frame and is fixedly connected with the side wall of each electromagnet. According to the invention, the temperature difference power generation board is used for generating power to electrify and generate magnetism for the electromagnets, so that the two electromagnets are close to each other to drive the sunshade cloth to slide and block external sunlight, and the phenomenon that normal growth of plants is strongly influenced by illumination in summer at noon is effectively avoided.
Description
Technical Field
The invention relates to the technical field of glass greenhouses, in particular to a self-shading and water-reducing skylight for a glass greenhouse.
Background
The glass greenhouse is a greenhouse taking glass as a main covering object and a steel structure as a framework, and the glass greenhouse has good light all weather, so that the glass greenhouse is widely used by people.
The growth speed of the plant is related to the temperature and the illumination, so the temperature and the sunlight irradiation degree required by the normal growth of the plant are required to be kept in the glass greenhouse all the time, but the sunlight irradiation is strong at noon in summer, so the temperature in the glass greenhouse is increased, the normal growth of the plant is influenced, the temperature in the glass greenhouse is required to be reduced at the moment, the glass greenhouse is shaded and cooled by an external shading system at present, but the shading and cooling can not be effectively conducted in the greenhouse on time according to the external actual conditions, the normal growth of the plant can be influenced, in addition, the water in the greenhouse is rapidly evaporated due to the temperature increase in the greenhouse at noon in summer, the plant wilts and withers, and the normal growth of the plant is directly influenced.
Therefore, we propose a self-shading and water-reducing skylight for glass greenhouses to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a self-shading and water-reducing skylight for a glass greenhouse.
In order to achieve the purpose, the invention adopts the following technical scheme:
a self-shading and water-reducing skylight for a glass greenhouse comprises a window frame, wherein two glass plates are symmetrically and fixedly connected to the inner wall of the window frame, two cavities are symmetrically formed in the window frame, a rotating shaft is rotatably connected to the inner walls of the two cavities, a piece of sun-shading cloth is wound on the side wall of the rotating shaft, two coil springs are symmetrically sleeved on the side wall of the rotating shaft, the inner ends of the two coil springs are fixedly connected with the side wall of the rotating shaft, the outer ends of the two coil springs are fixedly connected with the outer wall of the cavity, a ring-shaped groove is formed in the inner wall of the window frame, two electromagnets which absorb each other are symmetrically and slidably connected to the inner wall of the ring-shaped groove, one end of the sun-shading cloth penetrates through the side wall of the window frame and is fixedly connected with the side wall, the window frame lower extreme has seted up the annular chamber, the hole for water spraying that communicates with the window frame lower extreme is seted up to the bottom in the annular chamber, two sliding plug chambeies have been seted up to the annular chamber inner wall symmetry, two install the pumping device to the annular chamber internal pumping on the sliding plug chamber.
Preferably, the water pumping device includes that symmetry sliding connection is at the iron sliding plug of sliding plug intracavity wall, and is located two the iron sliding plug of sliding plug intracavity sets up along window frame axle center symmetry, the iron sliding plug lateral wall passes through spring and sliding plug intracavity wall fixed connection, iron sliding plug lateral wall fixedly connected with reservoir, reservoir inner wall is connected with the one-way pipe that absorbs water, reservoir inner wall is through one-way outlet pipe and annular chamber inner wall intercommunication.
The invention has the following beneficial effects:
1. by arranging the thermoelectric generation board, the heat conduction column, the two electromagnets and the sun-shading cloth, when the external temperature is higher at noon in summer, the thermoelectric generation board can generate current under the action of the temperature difference between the inside and the outside of the greenhouse, so that the two electromagnets generate magnetism after being electrified, and the two electromagnets are attracted to each other, so that the two electromagnets after being electrified are close to each other to drive the sun-shading cloth to slide on the inner wall of the window frame, so that the sun-shading cloth can block the external sunlight, and the normal growth of plants can be effectively prevented from being influenced by the strong illumination at noon in summer;
2. by arranging the rotating shaft and the coil spring, when the electromagnets drive the sunshade cloth to move, the rotating shaft drives the coil spring to rotate, the coil spring is stressed, when the temperature difference between the inside and the outside of the greenhouse cannot enable the thermoelectric generation panel to generate electricity, the magnetism on the two electromagnets disappears at the moment, the coil spring releases the elasticity to drive the rotating shaft to rotate reversely, and then the sunshade cloth is pulled and wound, so that plants in the greenhouse receive illumination again to perform photosynthesis, manual intervention is not needed in the process, the greenhouse can be automatically controlled to shade according to the change of the temperature inside and outside the greenhouse, compared with the existing sunshade system, the waste of power resources is reduced, and the plant planting cost is effectively saved;
3. by arranging the sliding plug cavity, the iron sliding plug, the liquid storage bag, the one-way water outlet pipe, the annular cavity and the water spraying holes, when the two electromagnets are close to each other, the iron sliding plug attracted with the electromagnets is driven to move to extrude the liquid storage bag, so that water in the liquid storage bag enters the annular cavity through the one-way water outlet pipe and is sprayed out from the water spraying holes to supplement water in the greenhouse, meanwhile, the temperature in the greenhouse can be further reduced, and the normal growth of plants is effectively guaranteed;
4. after the external temperature drops to enable the electromagnet to be powered off, the attraction of the electromagnet to the iron sliding plug disappears, the iron sliding plug can pull the liquid storage bag to return to the original position under the action of the spring, water is absorbed from the outside through the one-way water absorption pipe, and preparation is made for spraying water in the greenhouse next time.
Drawings
FIG. 1 is a schematic structural view of a self-shading and dewatering skylight for a glass greenhouse according to the present invention;
FIG. 2 is a schematic top view of a skylight for a self-shading and water-reducing type glass greenhouse according to the present invention;
fig. 3 is a schematic side sectional view of a skylight for a self-shading dewatering type glass greenhouse according to the present invention.
In the figure: 1 window frame, 2 glass plates, 3 cavities, 4 rotating shafts, 5 sun-shading cloths, 6 coil springs, 7 annular grooves, 8 electromagnets, 9 thermoelectric power generation plates, 10 heat-conducting columns, 11 sliding plug cavities, 12 springs, 13 iron sliding plugs, 14 liquid storage bags, 15 one-way water suction pipes, 16 one-way water outlet pipes, 17 annular cavities and 18 water spray holes.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. 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 herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, a self-shading and water-reducing skylight for a glass greenhouse comprises a window frame 1, wherein two glass plates 2 are symmetrically and fixedly connected to the inner wall of the window frame 1, two cavities 3 are symmetrically formed in the window frame 1, the inner walls of the two cavities 3 are rotatably connected with a rotating shaft 4, a sunshade cloth 5 is wound on the side wall of the rotating shaft 4, further, a reflective coating is coated on the side wall of the sunshade cloth 5, the reflective coating can reflect external sunlight and improve the sunshade effect, two coil springs 6 are symmetrically sleeved on the side wall of the rotating shaft 4, the inner ends of the two coil springs 6 are fixedly connected with the side wall of the rotating shaft 4, the outer ends of the two coil springs 6 are fixedly connected with the outer wall of the cavity 3, a ring-shaped groove 7 is formed in the inner wall of the window frame 1, two electromagnets 8 which attract each other are symmetrically and slidably connected to the inner wall of the ring-, the rotating shaft 4 is driven to rotate, the rotating shaft 4 drives the coil spring 6 to rotate at the moment, the coil spring 6 is stressed, elastic force is stored on the coil spring 6 at the moment, when the magnetic force on the electromagnet 8 disappears, the coil spring 6 releases the elastic force to drive the rotating shaft 4 to rotate reversely, the sun-shading cloth 5 is retracted and wound, the electromagnet 8 completely enters the annular groove 7, and illumination in the greenhouse is prevented from being influenced, the temperature difference power generation plate 9 is embedded in the window frame 1, the temperature difference power generation plate 9 is coupled and connected with the electromagnet 8 through a lead, the temperature difference power generation plate 9 generates power by utilizing the temperature difference of the cold end and the hot end of the power generation plate, the window frame is the prior art, the upper end of the temperature difference power generation plate 9 is fixedly connected with the heat conduction column 10 communicated with the roof, the external temperature can be accurately transmitted to the temperature difference power generation plate 9, the sensitivity of the device is improved, the annular cavity 17 is, two sliding plug cavities 11 are symmetrically formed in the inner wall of the annular groove 7, and water pumping devices for pumping water in the annular cavity 17 are mounted on the two sliding plug cavities 11.
The water pumping device comprises iron sliding plugs 13 which are symmetrically and slidably connected with the inner walls of the sliding plug cavities 11, the iron sliding plugs 13 positioned in the two sliding plug cavities 11 are symmetrically arranged along the axis of the window frame 1, furthermore, the inner walls of the sliding plug cavities 11 are provided with through holes communicated with the side walls of the window frame 1, the air pressure balance device is used for balancing the air pressure when the iron sliding plug 13 slides, the side wall of the iron sliding plug 13 is fixedly connected with the inner wall of the sliding plug cavity 11 through a spring 12, the side wall of the iron sliding plug 13 is fixedly connected with a liquid storage bag 14, the inner wall of the liquid storage bag 14 is connected with a one-way water suction pipe 15, the inner wall of the liquid storage bag 14 is communicated with the inner wall of the annular cavity 17 through a one-way water outlet pipe 16, further, the one-way water suction pipe 15 can be connected with an external water supply mechanism, the one-way water suction pipe 15 only allows water to enter the liquid storage bag 14 from the outside, the one, and one-way valves can be arranged in the one-way water suction pipe 15 and the one-way water outlet pipe 16 to realize the functions.
In the invention, when the external temperature is higher in summer and noon so that the two sides of the thermoelectric generation plate 9 embedded in the window frame 1 generate larger temperature difference, the thermoelectric generation plate 9 generates current, the electromagnets 8 coupled with the thermoelectric generation plate 9 are electrified, the magnetic force generated after the two electromagnets 8 are electrified mutually attracts to drive the sun-shading cloth 5 fixedly connected with the side walls of the electromagnets 8 to be pulled out by rotating the side walls of the rotating shaft 4 until the two electromagnets 8 are completely attached, so that the sun-shading cloth 5 completely blocks the sunlight irradiated on the glass plate 2, the rotating shaft 4 rotates and rotates the coil spring 6 fixedly connected with the side walls of the rotating shaft 4, so that the coil spring 6 is forced to store elastic force, meanwhile, when the electromagnets 8 are electrified mutually attracted and slide, the iron sliding plug 13 attracted to be attracted to the electromagnet 8 slides to extrude the liquid storage bag 14 fixedly connected with the side walls of the iron sliding plug 13, so that the water in the liquid storage bag 14 is processed in the annular cavity, and is sprayed out from a water spraying hole 18 arranged at the bottom in the annular cavity 17 to spray water and cool the greenhouse;
when ambient temperature is lower, the difference in temperature of 9 both sides of thermoelectric generation board is not making its electricity generation this moment for outage demagnetization on the electro-magnet 8, coil spring 6 release elasticity this moment, drive pivot 4 reversal, twine the shrink to puggaree 5, simultaneously, the appeal to iron sliding plug 13 disappears after magnetic force disappears on the electro-magnet 8, iron sliding plug 13 gets back to the normal position under spring 12's effect, it is tensile to drive reservoir 14, make reservoir 14 absorb water through one-way water absorption pipe 15, prepare for watering next time.
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 considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. The self-shading and water-reducing skylight for the glass greenhouse comprises a window frame (1), wherein two glass plates (2) are symmetrically and fixedly connected to the inner wall of the window frame (1), and is characterized in that two cavities (3) are symmetrically formed in the window frame (1), the inner walls of the two cavities (3) are rotatably connected with a rotating shaft (4), sunshade cloth (5) is wound on the side wall of the rotating shaft (4), two coil springs (6) are symmetrically sleeved on the side wall of the rotating shaft (4), the inner ends of the two coil springs (6) are fixedly connected with the side wall of the rotating shaft (4), the outer ends of the two coil springs (6) are fixedly connected with the outer wall of the cavity (3), a ring groove (7) is formed in the inner wall of the window frame (1), two mutually-absorbing electromagnets (8) are symmetrically and slidably connected to the inner wall of the ring groove (7), one end of the sunshade cloth (5), window frame (1) is embedded to be equipped with thermoelectric generation board (9), just thermoelectric generation board (9) pass through wire and electro-magnet (8) coupling connection, heat conduction post (10) of thermoelectric generation board (9) upper end fixedly connected with and shed roof intercommunication, annular chamber (17) have been seted up to window frame (1) lower extreme, hole for water spraying (18) with window frame (1) lower extreme intercommunication are seted up to bottom in annular chamber (17), two sliding plug chamber (11), two have been seted up to annular groove (7) inner wall symmetry install the pumping device to pumping water in annular chamber (17) on sliding plug chamber (11).
2. The self-shading water-reducing skylight for the glass greenhouse as claimed in claim 1, wherein the water pumping device comprises iron sliding plugs (13) symmetrically and slidably connected to the inner wall of the sliding plug cavity (11), and the two iron sliding plugs (13) in the sliding plug cavity (11) are symmetrically arranged along the axis of the window frame (1), the side wall of the iron sliding plug (13) is fixedly connected with the inner wall of the sliding plug cavity (11) through a spring (12), the side wall of the iron sliding plug (13) is fixedly connected with a liquid storage bag (14), the inner wall of the liquid storage bag (14) is connected with a one-way water suction pipe (15), and the inner wall of the liquid storage bag (14) is communicated with the inner wall of the annular cavity (17) through a one-way water outlet pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010584430.8A CN111699888B (en) | 2020-06-23 | 2020-06-23 | Self-shading and dewatering type skylight for glass greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010584430.8A CN111699888B (en) | 2020-06-23 | 2020-06-23 | Self-shading and dewatering type skylight for glass greenhouse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111699888A true CN111699888A (en) | 2020-09-25 |
| CN111699888B CN111699888B (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010584430.8A Active CN111699888B (en) | 2020-06-23 | 2020-06-23 | Self-shading and dewatering type skylight for glass greenhouse |
Country Status (1)
| Country | Link |
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| CN (1) | CN111699888B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622687A (en) * | 2022-05-11 | 2022-06-14 | 南通万维钢品有限公司 | Stepless skylight of adjusting luminance of magnetic current body diffusion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622687A (en) * | 2022-05-11 | 2022-06-14 | 南通万维钢品有限公司 | Stepless skylight of adjusting luminance of magnetic current body diffusion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111699888B (en) | 2022-04-19 |
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Effective date of registration: 20220329 Address after: 410303 Gaofeng group, Sharon village, Yanxi Town, Liuyang City, Changsha City, Hunan Province Applicant after: HUNAN YANXI XINFENG GAOKE AGRICULTURAL DEVELOPMENT Co.,Ltd. Address before: 212001 Jiangsu University, No.301 Xuefu Road, Jingkou District, Zhenjiang City, Jiangsu Province Applicant before: Wang Junming |
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