CN216693900U - A device that is used for indoor air purification of petrochemical industry enterprise to disappear and kill - Google Patents
A device that is used for indoor air purification of petrochemical industry enterprise to disappear and kill Download PDFInfo
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- CN216693900U CN216693900U CN202122821585.1U CN202122821585U CN216693900U CN 216693900 U CN216693900 U CN 216693900U CN 202122821585 U CN202122821585 U CN 202122821585U CN 216693900 U CN216693900 U CN 216693900U
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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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a device for indoor air purification and sterilization of petrochemical enterprises, which comprises a vertical shell; a filtering area, an ultraviolet ozone sterilizing area, a peculiar smell digestion area and a catalytic decomposition area are arranged in the vertical shell; an air distribution net is arranged between the ultraviolet ozone sterilization area and the peculiar smell digestion area; a driving fan is arranged between the catalytic decomposition area and the air outlet end; a primary filter and a high-efficiency filter are arranged in the filtering area; an ultraviolet lamp set is arranged in the ultraviolet ozone sterilization zone; a first porous material loaded with molecular sieve powder is arranged in the peculiar smell digestion region; and a second porous material loaded with a manganese-based catalyst is arranged in the catalytic decomposition zone. The utility model can eliminate and purify dust, PM2.5, hydrogen sulfide, nitrogen oxide peculiar smell waste gas, VOCs and some bacteria and viruses contained in indoor air of petrochemical enterprises, thereby realizing one-stop air purification aiming at indoor complex gas environment of the petrochemical enterprises.
Description
Technical Field
The utility model belongs to the technical field of indoor air purification, and particularly relates to a device for purifying and killing indoor air of petrochemical enterprises.
Background
For petrochemical enterprises, dust, PM2.5, VOCs, hydrogen sulfide and nitrogen oxide odor exhaust gas are generally generated in the boundary area of a factory, and the gases can circulate into the interior of the petrochemical enterprise, so that the health of workers is harmed. In order to improve the indoor air quality of petrochemical enterprises, air purifiers are mostly installed indoors.
At present, an air purifier used indoors in a petrochemical enterprise mostly adopts an activated carbon adsorption purification technology, although activated carbon has a good adsorption effect on macromolecular VOCs, the activated carbon has a poor adsorption effect on micromolecular gaseous pollutants such as hydrogen sulfide and nitrogen oxide odor waste gas contained in a factory area of the petrochemical enterprise, and the micromolecular pollutants are easily desorbed again after being adsorbed by the activated carbon to form secondary pollution; in addition, the activated carbon is combustible and dangerous waste after adsorbing organic matters, and has safety risk when being applied in petrochemical enterprises.
Based on above problem, this application provides a device that is used for indoor air purification of petrochemical industry to kill, the inside elimination that can realize dust, PM2.5, hydrogen sulfide and nitrogen oxide class peculiar smell waste gas, VOCs and some bacteria and viruses in the indoor air of petrochemical industry purifies of the device to realized one-stop air purification to the indoor complicated gaseous environment of petrochemical industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a device for purifying and killing indoor air of petrochemical enterprises.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a device for purifying and killing indoor air of petrochemical enterprises comprises a vertical shell, wherein an air inlet end is arranged at the bottom of the vertical shell, and an air outlet end is arranged at the top of the vertical shell;
a filtering area, an ultraviolet ozone sterilization area, a peculiar smell digestion area and a catalytic decomposition area which are communicated with each other are sequentially arranged between the air inlet end and the air outlet end in the vertical shell;
a horizontally arranged air distribution net is arranged in the vertical shell between the ultraviolet ozone sterilization zone and the peculiar smell digestion zone;
a driving fan is arranged in the vertical shell between the catalytic decomposition area and the air outlet end;
a primary filter and a high-efficiency filter are arranged in the filtering area, and the primary filter is close to the air inlet end;
a plurality of ultraviolet lamp groups are arranged in the ultraviolet ozone sterilizing zone, and each ultraviolet lamp group comprises a first ultraviolet lamp with the wavelength of 185nm and a second ultraviolet lamp with the wavelength of 254 nm;
a first porous material loaded with an odor adsorbent is arranged in the odor digestion region;
and a second porous material loaded with a manganese-based catalyst is arranged in the catalytic decomposition area.
Preferably, the first ultraviolet lamp and the second ultraviolet lamp are both in quartz lamp tube structures;
the left end of the first ultraviolet lamp and the right end of the second ultraviolet lamp are fixedly connected with the inner wall of the vertical shell through stainless steel supports.
Preferably, in the same ultraviolet lamp group, the first ultraviolet lamps and the second ultraviolet lamps are arranged in a vertically staggered manner, and the second ultraviolet lamps are positioned at the upper parts of the first ultraviolet lamps;
the first ultraviolet lamps in all the ultraviolet lamp groups are vertically aligned, and the second ultraviolet lamps in all the ultraviolet lamp groups are vertically aligned.
Preferably, the number of the ultraviolet lamp groups is 3.
Preferably, the first porous material is foam cotton or nickel net;
a first supporting inner platform used for supporting the first porous material is arranged in the vertical shell.
Preferably, the second porous material is foam cotton or nickel net;
and a second supporting inner platform for supporting a second porous material is arranged in the vertical shell.
Preferably, the inner side of the air outlet end is provided with an ozone analyzer.
Preferably, the vertical shell is made of stainless steel material.
Preferably, the four corners of the bottom of the vertical shell are provided with support legs for supporting, and the bottoms of the support legs are provided with universal wheels.
The utility model has the beneficial effects that:
(1) according to the utility model, through the arrangement of the filtering zone, the ultraviolet ozone sterilization zone, the peculiar smell digestion zone and the catalytic decomposition zone, dust, PM2.5, hydrogen sulfide, nitrogen oxide peculiar smell waste gas, VOCs and some bacteria and viruses contained in indoor air of the petrochemical enterprise can be eliminated and purified, so that one-stop air purification aiming at indoor complex gas environment of the petrochemical enterprise is realized.
(2) In the utility model, a horizontally placed air distribution net is arranged in the vertical shell between the ultraviolet ozone sterilization zone and the peculiar smell digestion zone and is used for dispersing air flow and improving the subsequent treatment efficiency.
(3) The filtering area is used for filtering dust and PM2.5 particle pollutants in gas, so that the air is purified, and the influence of the dust and the PM2.5 particle pollutants on the manganese-based catalyst in the catalytic decomposition area is avoided, so that the catalytic efficiency and the service life of the catalyst are ensured.
(4) Compared with the existing active carbon, the molecular sieve material can efficiently adsorb small molecular pollutants of hydrogen sulfide and nitrogen oxide odor gases, and the adsorbed small molecular pollutants can be polymerized under the ozone atmosphere generated by an ultraviolet ozone sterilizing zone to realize deep purification of molecules of odor gases difficult to degrade, so that secondary pollution caused by desorption of the molecules of the odor gases is prevented, and regeneration of the molecular sieve is realized in the deep purification process; meanwhile, the deep purification of the odor gas pollutants effectively avoids the inactivation of the manganese-based catalyst in the catalytic decomposition region due to the poisoning of adsorbed sulfides and nitrogen oxides.
(5) In the utility model, the manganese-based catalyst and the ozone generated by the ultraviolet ozone sterilization zone synergistically act to further degrade intermediate products of VOCs (volatile organic compounds), and finally the VOCs are completely mineralized to generate CO2And H2And O, and simultaneously, redundant ozone is decomposed to prevent harm to human bodies.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic front view of the apparatus for indoor air purification and sterilization in petrochemical enterprises according to the present invention;
FIG. 2 is a schematic perspective view showing the construction of the apparatus for indoor air purification and sterilization in petrochemical enterprises according to the present invention;
FIG. 3 is a schematic diagram of the arrangement of the UV lamp set in the UV-ozone sterilizing zone according to the present invention;
wherein:
1-a vertical shell, 2-an air inlet end, 3-an air outlet end, 4-a filtering area, 5-an ultraviolet ozone sterilization area, 501-a first ultraviolet lamp, 502-a second ultraviolet lamp, 503-a stainless steel support, 6-a peculiar smell digestion area, 7-a catalytic decomposition area, 8-a driving fan and 9-an air distribution net.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "bottom", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present invention, and do not particularly indicate any components or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "connected" and "connecting" should be interpreted broadly, and mean either a fixed connection or an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The utility model is further illustrated with reference to the following figures and examples.
As shown in fig. 1 and 2, a device for indoor air purification and sterilization of petrochemical enterprises comprises a vertical shell 1, wherein an air inlet end 2 is arranged at the bottom of the vertical shell 1, and an air outlet end 3 is arranged at the top of the vertical shell 1;
a filtering area 4, an ultraviolet ozone sterilization area 5, a peculiar smell digestion area 6 and a catalytic decomposition area 7 which are communicated with each other are sequentially arranged between the air inlet end 2 and the air outlet end 3 in the vertical shell 1;
a horizontally arranged air distribution net 9 is arranged in the vertical shell 1 between the ultraviolet ozone sterilizing area 5 and the peculiar smell digestion area 6, and the air distribution net 9 is a metal net and is used for dispersing air flow and improving the subsequent treatment efficiency;
a driving fan 8 is arranged in the vertical shell 1 between the catalytic decomposition area 7 and the air outlet end 3; the driving fan 8 drives air to be sucked from the air inlet end 2 and discharged from the air outlet end 3, so that indoor air is circularly purified in the vertical shell;
a primary filter and a high-efficiency filter are arranged in the filtering area 4, and the primary filter is close to the air inlet end 2; wherein, the primary filter and the high-efficiency filter are both in the prior art, and the detailed structure and the filtering principle are not repeated herein; the primary filter and the high-efficiency filter are used for filtering dust and PM2.5 particle pollutants in gas, so that on one hand, air is purified, and on the other hand, the influence of the dust and the PM2.5 particle pollutants on the manganese-based catalyst in the catalytic decomposition area is avoided, and therefore, the catalytic efficiency and the service life of the catalyst are ensured;
a plurality of ultraviolet lamp groups are arranged in the ultraviolet ozone sterilizing zone 5, and each ultraviolet lamp group comprises a first ultraviolet lamp 501 with the wavelength of 185nm and a second ultraviolet lamp 502 with the wavelength of 254 nm; the light of the second ultraviolet lamp 502 with the wavelength of 254nm can destroy DNA and RNA molecular chains and proteins of the bacteria and viruses, so that the bacteria and viruses lose the growth and reproduction capability, and the bacteria and viruses are killed, thereby playing a role in killing the bacteria and viruses in the gas; the light of the first ultraviolet lamp 501 with the wavelength of 185nm has high photon energy, so that partial chemical bonds of VOCs can be broken to achieve the degradation effect, and H in the air can be excited2O、O2Finally, active free radicals with strong oxidizing property and ozone are formed, the generated ozone on one hand and the light of the second ultraviolet lamp 502 cooperate to kill bacteria and viruses, and simultaneously the ozone and the subsequent catalytic decomposition are carried outThe manganese-based catalyst in the zone 7 acts together to further degrade the intermediate products of VOCs;
a first porous material loaded with an odor adsorbent is arranged in the odor digestion area 6; specifically, the odor adsorbent adopts molecular sieve powder, the molecular sieve powder can efficiently adsorb small molecular pollutants such as hydrogen sulfide and nitrogen oxide, and the adsorbed small molecular pollutants can be polymerized and decomposed under the ozone atmosphere to realize deep purification of the molecules of the odor gas which is difficult to degrade, so that secondary pollution caused by desorption of the molecules of the odor gas is prevented, and the regeneration of the molecular sieve is realized in the deep purification process; meanwhile, the deep purification of the odor gas pollutants effectively avoids the inactivation of the manganese-based catalyst in the catalytic decomposition zone 7 due to the poisoning of adsorbing sulfides and nitrogen oxides;
a second porous material loaded with a manganese-based catalyst is arranged in the catalytic decomposition zone 7; the manganese-based catalyst and the ozone generated by the ultraviolet ozone sterilization zone 5 act synergistically to further degrade intermediate products of the VOCs, and finally the VOCs are completely mineralized to generate CO2And H2And O, and simultaneously, redundant ozone is decomposed to prevent harm to human bodies.
Preferably, the first ultraviolet lamp 501 and the second ultraviolet lamp 502 both adopt quartz lamp tube structures; the first ultraviolet lamp 501 and the second ultraviolet lamp 502 both extend along the left-right direction of the vertical shell 1 in length;
the left end of the first ultraviolet lamp 501 and the right end of the second ultraviolet lamp 502 are both fixedly connected with the inner wall of the vertical casing 1 through stainless steel brackets 503.
Preferably, as shown in fig. 3, in the same uv lamp group, the first uv lamp 501 and the second uv lamp 502 are arranged in a staggered manner, and the second uv lamp 502 is located above the first uv lamp 501; that is, two ultraviolet lamps in each ultraviolet lamp group are not located on the same vertical plane, so as to increase the irradiation range and area and eliminate dead angles, and a first ultraviolet lamp 501 and a second ultraviolet lamp 502 in the dashed box in fig. 3 represent one ultraviolet lamp group;
the first uv lamps 501 in all uv lamp groups are aligned top to bottom and the second uv lamps 502 in all uv lamp groups are aligned top to bottom.
Preferably, the number of the ultraviolet lamp groups is 3.
Preferably, the first porous material is foam cotton or nickel net; specifically, the molecular sieve powder can be loaded on the first porous material in a spraying mode; the structural mode of loading the molecular sieve powder on the foam cotton or the nickel net can ensure that the molecular sieve powder is fully contacted with gas, thereby ensuring the adsorption and depolymerization effects;
a first supporting inner platform for supporting a first porous material is arranged in the vertical shell 1, and the first porous material consisting of foam cotton or nickel net is supported and fixed on the first supporting inner platform.
Preferably, the second porous material is foam cotton or nickel mesh. Specifically, manganese-based catalyst powder can be loaded on the second porous material in a spraying mode; the manganese-based catalyst powder can be fully contacted with gas by a structural mode of loading the manganese-based catalyst powder on the foam cotton or the nickel net, so that the catalytic purification effect is ensured;
a second supporting inner table for supporting a second porous material is arranged in the vertical shell 1, and the second porous material consisting of foam cotton or nickel net is supported and fixed on the second supporting inner table.
Preferably, an ozone analyzer is arranged on the inner side of the air outlet end 3.
Preferably, the vertical housing 1 is made of stainless steel material to avoid the oxidation of the vertical housing 1 by ultraviolet rays and ozone.
Preferably, the four corners of the bottom of the vertical casing 1 are provided with support legs for supporting, and the bottoms of the support legs are provided with universal wheels for facilitating movement, wherein the support legs and the universal wheels are not shown in the attached drawings.
A device for indoor air purification and sterilization of petrochemical enterprises comprises the following specific implementation modes:
the device can be arranged on the ground or the desktop in a petrochemical enterprise room for use. When the indoor air purifier works, the driving fan 8 is started, indoor air is introduced into the air inlet end 2, the introduced air is purified through the filtering area 4, the ultraviolet ozone sterilizing area 5, the peculiar smell digestion area 6 and the catalytic decomposition area 7 in sequence, and the purified air is discharged from the air outlet end 3; the driving fan 8 is continuously operated, thereby realizing the circulation purification of the indoor air in the vertical shell 1.
When the gas passes through the filtering area 4, the primary filter and the high-efficiency filter in the filtering area 4 filter dust and PM2.5 particle pollutants carried in indoor air;
then the gas enters an ultraviolet ozone sterilizing zone 5, and the light of a second ultraviolet lamp 502 in the ultraviolet ozone sterilizing zone 5 can kill bacteria and viruses in the gas; the light of the first ultraviolet lamp 501 can degrade VOCs and generate ozone; namely, in the ultraviolet ozone sterilization zone 5, ultraviolet radiation is cooperated with ozone to sterilize and disinfect air and degrade VOCs;
then the gas enters an odor digestion zone 6, the molecular sieve powder in the odor digestion zone 6 forms high-efficiency adsorption on small molecular pollutants such as hydrogen sulfide and nitrogen oxide, and the adsorbed small molecular pollutants can be polymerized under the ozone atmosphere generated by an ultraviolet ozone sterilization zone 5, so that the deep purification of the odor gas molecules which are difficult to degrade is realized, the secondary pollution caused by desorption of the odor gas molecules is prevented, and the regeneration of the molecular sieve is realized in the deep purification process; meanwhile, the deep purification of the odor gas pollutants effectively avoids the inactivation of the manganese-based catalyst in the catalytic decomposition zone 7 due to the poisoning of adsorbing sulfides and nitrogen oxides;
then the gas enters a catalytic decomposition zone 7, the manganese-based catalyst in the catalytic decomposition zone 7 and the ozone generated by the ultraviolet ozone zone 5 act synergistically to further degrade intermediate products of the VOCs, and finally the VOCs are completely mineralized to generate CO2And H2O, and simultaneously, redundant ozone is decomposed to prevent harm to human bodies;
the purified gas is discharged from the air outlet end 3, so that the indoor air is purified.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the present invention, and it should be understood by those skilled in the art that various modifications and changes may be made without inventive efforts based on the technical solutions of the present invention.
Claims (9)
1. A device for purifying and killing indoor air of petrochemical enterprises is characterized by comprising a vertical shell, wherein the bottom of the vertical shell is provided with an air inlet end, and the top of the vertical shell is provided with an air outlet end;
a filtering area, an ultraviolet ozone sterilization area, a peculiar smell digestion area and a catalytic decomposition area which are communicated with each other are sequentially arranged between the air inlet end and the air outlet end in the vertical shell;
a horizontally arranged air distribution net is arranged in the vertical shell between the ultraviolet ozone sterilization zone and the peculiar smell digestion zone;
a driving fan is arranged in the vertical shell between the catalytic decomposition area and the air outlet end;
a primary filter and a high-efficiency filter are arranged in the filtering area, and the primary filter is close to the air inlet end;
a plurality of ultraviolet lamp groups are arranged in the ultraviolet ozone sterilizing zone, and each ultraviolet lamp group comprises a first ultraviolet lamp with the wavelength of 185nm and a second ultraviolet lamp with the wavelength of 254 nm;
a first porous material loaded with an odor adsorbent is arranged in the odor digestion region;
and a second porous material loaded with a manganese-based catalyst is arranged in the catalytic decomposition area.
2. The apparatus according to claim 1, wherein the first ultraviolet lamp and the second ultraviolet lamp are both of quartz tube structure;
the left end of the first ultraviolet lamp and the right end of the second ultraviolet lamp are fixedly connected with the inner wall of the vertical shell through stainless steel supports.
3. The apparatus for purifying and killing indoor air of a petrochemical enterprise as defined in claim 1, wherein the first ultraviolet lamps and the second ultraviolet lamps are arranged in a vertically staggered manner in the same ultraviolet lamp group, and the second ultraviolet lamps are located above the first ultraviolet lamps;
the first ultraviolet lamps in all the ultraviolet lamp groups are vertically aligned, and the second ultraviolet lamps in all the ultraviolet lamp groups are vertically aligned.
4. The apparatus for indoor air purification and sterilization in petrochemical enterprises according to claim 1, wherein the number of the ultraviolet lamp sets is 3.
5. The apparatus for indoor air purification and sterilization of petrochemical enterprises according to claim 1, wherein the first porous material is foam cotton or nickel mesh;
a first supporting inner platform used for supporting the first porous material is arranged in the vertical shell.
6. The apparatus for indoor air purification and sterilization of petrochemical enterprises according to claim 1, wherein the second porous material is foam cotton or nickel mesh;
and a second supporting inner platform for supporting a second porous material is arranged in the vertical shell.
7. The apparatus as claimed in claim 1, wherein an ozone analyzer is installed inside the wind outlet.
8. The apparatus as claimed in claim 1, wherein the vertical housing is made of stainless steel.
9. The apparatus as claimed in claim 1, wherein the vertical casing has supporting legs at four corners of the bottom thereof, and universal wheels are provided at the bottoms of the supporting legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122821585.1U CN216693900U (en) | 2021-11-18 | 2021-11-18 | A device that is used for indoor air purification of petrochemical industry enterprise to disappear and kill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122821585.1U CN216693900U (en) | 2021-11-18 | 2021-11-18 | A device that is used for indoor air purification of petrochemical industry enterprise to disappear and kill |
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| Publication Number | Publication Date |
|---|---|
| CN216693900U true CN216693900U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122821585.1U Active CN216693900U (en) | 2021-11-18 | 2021-11-18 | A device that is used for indoor air purification of petrochemical industry enterprise to disappear and kill |
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| CN (1) | CN216693900U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253656A (en) * | 2022-07-25 | 2022-11-01 | 连云港市宏庆电力辅机开发有限公司 | Gas deaerator |
| CN117861434A (en) * | 2023-03-15 | 2024-04-12 | 厦门臻贵生物科技有限公司 | Can decompose intelligent shoe box of filtration waste gas |
-
2021
- 2021-11-18 CN CN202122821585.1U patent/CN216693900U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253656A (en) * | 2022-07-25 | 2022-11-01 | 连云港市宏庆电力辅机开发有限公司 | Gas deaerator |
| CN115253656B (en) * | 2022-07-25 | 2024-01-09 | 连云港振辉机械设备有限公司 | Gas deaerator |
| CN117861434A (en) * | 2023-03-15 | 2024-04-12 | 厦门臻贵生物科技有限公司 | Can decompose intelligent shoe box of filtration waste gas |
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Effective date of registration: 20221031 Address after: No. 22, Chaoyangmen street, Chaoyang District, Beijing 100020 Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Safety Engineering Research Institute Co.,Ltd. Patentee after: QINGDAO NUOCHENG CHEMICAL SAFETY TECHNOLOGY CO.,LTD. Address before: 266216 No. 7, Shanxiu Road, langu high tech Zone, Jimo City, Qingdao City, Shandong Province Patentee before: QINGDAO NUOCHENG CHEMICAL SAFETY TECHNOLOGY CO.,LTD. Patentee before: Qingdao Chuangqi meWo Environmental Technology Co.,Ltd. |