CN109012142B - Paint spraying waste gas treatment device - Google Patents
Paint spraying waste gas treatment device Download PDFInfo
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- CN109012142B CN109012142B CN201810728656.3A CN201810728656A CN109012142B CN 109012142 B CN109012142 B CN 109012142B CN 201810728656 A CN201810728656 A CN 201810728656A CN 109012142 B CN109012142 B CN 109012142B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0258—Other waste gases from painting equipments or paint drying installations
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
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Abstract
The invention relates to a paint spraying waste gas treatment device, which belongs to the technical field of waste gas treatment and comprises a paint spraying chamber, wherein an air inlet is formed in the left side of the paint spraying chamber, an air outlet is formed in the right side of the paint spraying chamber, a lighting lamp and a paint baking lamp are installed in the paint spraying chamber, an air blower is installed in the air inlet, a fine filter screen is installed on the outer side of the air blower, a coarse filter screen is installed on the outer side of the fine filter screen, and a waste gas treatment device is installed. According to the invention, the low-concentration waste gas is concentrated and then treated by detecting the concentration of VOCs, so that the waste gas purification efficiency is improved, the spray paint waste gas is adsorbed and decomposed on one adsorption plate only by arranging the baffle plate, an active carbon net or a supplementary photocatalyst on the other adsorption plate is convenient to replace or supplement at any time during working, the operation is convenient, the waste gas treatment is convenient to continuously carry out, the spray paint waste gas treatment is carried out by photocatalysis, the cost is low, the operation is convenient, and the purification efficiency is high.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to a paint spraying waste gas treatment device.
Background
The waste gas treatment refers to the treatment of dust particles, smoke and dust, peculiar smell gas and toxic and harmful gas, and common waste gas treatment includes factory smoke and dust waste gas treatment, workshop dust waste gas treatment, organic waste gas treatment, waste gas peculiar smell treatment, acid-base waste gas treatment, chemical waste gas treatment and the like. The paint is widely applied to the field of surface treatment of products such as furniture manufacturing, shoe manufacturing, automobile production, mechanical manufacturing, household appliances, electromechanics, plastics, hardware and the like, organic waste gas pollutants such as benzene, toluene, xylene and other Volatile Organic Compounds (VOCs) are easily generated during paint spraying, the organic waste gas can pollute the atmosphere, and many of the organic waste gas pollutants are carcinogens.
Most of the current spray paint waste gas are treated by adopting an adsorption method, but the adsorption method has poor adsorption effect when the concentration of the waste gas is lower, generally between 60-85%, and is difficult to reach increasingly strict environmental protection requirements, and the adsorption material needs to be replaced in time during adsorption, and an adsorption device needs to be closed when the adsorption material is replaced, so that the waste gas treatment cannot be continuously carried out, the treatment efficiency is low, and the purification efficiency is low.
Disclosure of Invention
The present invention is directed to a paint spraying waste gas treatment device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a paint spraying waste gas treatment device comprises a paint spraying chamber, wherein an air inlet is arranged on the left side of the paint spraying chamber, an air outlet is arranged on the right side of the paint spraying chamber, a lighting lamp and a baking lamp are arranged in the paint spraying chamber, an air blower is arranged in the air inlet, a fine filter screen is arranged on the outer side of the air blower, a coarse filter screen is arranged on the outer side of the fine filter screen, a waste gas treatment device is arranged in the air outlet, the waste gas treatment device comprises a control system, a motor, a concentration wheel, a first air inlet pipe, a second air inlet pipe and an air outlet pipe, the motor is in rotating connection with the concentration wheel through a belt, the concentration wheel comprises a desorption area and an adsorption area, the first air inlet pipe is arranged on the left side of the concentration wheel, a first electromagnetic valve and a VOCs detector are arranged in the first air inlet pipe, the second, the concentrated wheel right side is installed out the tuber pipe, it installs the adsorption plate to go out the tuber pipe, motor, first solenoid valve, second solenoid valve and VOCs detector respectively with control system electric connection.
As a further technical scheme of the invention: the exhaust pipe is internally provided with a first air outlet channel and a second air outlet channel, the exhaust pipe is internally provided with a groove, a partition plate is arranged in the groove, waste gas can only pass through the first air outlet channel or the second air outlet channel by moving the partition plate, the adsorption plate comprises a first adsorption plate and a second adsorption plate, and the first adsorption plate and the second adsorption plate are both provided with an activated carbon net and an ultraviolet lamp.
As a further technical scheme of the invention: the activated carbon net is of a honeycomb structure, and a photocatalyst is arranged inside the activated carbon net.
As a further technical scheme of the invention: the photocatalyst is fixed on the active carbon net by a chemical vapor deposition method.
As a further technical scheme of the invention: the photocatalyst is nano TiO powder, and has good catalytic activity, low price, no toxicity and no harm.
As a further technical scheme of the invention: the water collecting box is installed at the bottom of each of the first adsorption plate and the second adsorption plate, so that water generated by photocatalysis can be collected and treated conveniently.
As a further technical scheme of the invention: all install the filter in first air-supply line and the second air-supply line, the filter is V type paper filter, avoids the coating cloud to get into exhaust treatment device and influences the device normal operating.
Compared with the prior art, the invention has the beneficial effects that: concentration through detecting VOCs carries out retreatment after concentrating low concentration waste gas according to the concentration size, has improved exhaust purification efficiency, through setting up the baffle messenger waste gas that sprays paint only adsorbs the decomposition on an adsorption plate, be convenient for change the active carbon net on another adsorption plate or supply photocatalyst at any time at the during operation, convenient operation is convenient for continuously carry out exhaust-gas treatment, through the exhaust-gas treatment that sprays paint of photocatalysis, and is with low costs, convenient operation, purification efficiency is high.
Drawings
FIG. 1 is a schematic view showing the construction of a painting waste gas treatment apparatus;
FIG. 2 is a schematic view showing the construction of an exhaust gas treatment device in the paint spraying exhaust gas treatment device;
FIG. 3 is a front view of an exhaust gas treatment device in a paint spray exhaust gas treatment device;
FIG. 4 is a sectional view of an air outlet pipe in the painting waste gas treatment apparatus;
FIG. 5 is a sectional view of an adsorption plate in the painting waste gas treatment apparatus;
fig. 6 is a left side view of an exhaust gas treatment device in the painting exhaust gas treatment device.
In the figure: 1-a spray booth, 2-an air inlet, 3-an air outlet, 4-a lighting lamp, 5-a baking varnish lamp, 6-a blower, 7-a fine filter screen, 8-a coarse filter screen, 9-a waste gas treatment device, 10-a control system, 11-a motor, 12-a concentration wheel, 13-a first air inlet pipe, 14-a second air inlet pipe, 15-an air outlet pipe, 16-a first electromagnetic valve, 17-a second electromagnetic valve, 18-an adsorption plate, 19-a VOCs detector, 20-a desorption area, 21-an adsorption area, 22-a first air outlet channel, 23-a second air outlet channel, 24-a groove, 25-a partition plate, 26-a first adsorption plate, 27-a second adsorption plate, 28-an active carbon net, 29-a photocatalyst, 30-an ultraviolet lamp, 31-a water collecting box and 32-a filter.
Detailed Description
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The paint spraying waste gas treatment device shown in figures 1-5 comprises a paint spraying chamber 1, wherein an air inlet 2 is arranged on the left side of the paint spraying chamber 1, an air outlet 3 is arranged on the right side of the paint spraying chamber, a lighting lamp 4 and a paint baking lamp 5 are installed in the air spraying chamber 1, an air blower 6 is installed in the air inlet 2, a fine filter screen 7 is installed on the outer side of the air blower 6, a coarse filter screen 8 is installed on the outer side of the fine filter screen 7, a waste gas treatment device 9 is installed in the air outlet 3, paint spraying work is carried out in the paint spraying chamber 1, the air blower 6 in the air inlet 2 enters the paint spraying chamber through the coarse filter screen 8 and the fine filter screen 7 in sequence, and paint spraying waste gas is discharged after being treated by the waste gas treatment device in the air outlet 3, the waste gas treatment device 9 comprises a control system 10, a motor 11, a concentration, motor 11 rotates with concentrated wheel 12 through the belt to be connected, concentrated wheel 12 includes desorption district 20 and adsorption zone 21, through adsorption zone 21 with the waste gas absorption that sprays paint, along with concentrated wheel 12 rotates the desorption of absorptive waste gas in desorption district 20 on adsorption zone 21, handles the waste gas concentration back of low concentration together, reduces invalid process volume, first air-supply line 13 is installed in concentrated wheel 12 left side, install first solenoid valve 16 and VOCs detector 19 in the first air-supply line 13, detect VOCs concentration in the waste gas through VOCs detector 19, concentrate earlier when concentration is less than the setting value and handle again, second air-supply line 14 is installed to first air-supply line 13 upper end, install second solenoid valve 17 in the second air-supply line 14, concentrated wheel 12 right sides is installed out tuber pipe 15, install adsorption plate 18 on the play tuber pipe 15, motor 11, first solenoid valve 16, The second electromagnetic valve 17 and the VOCs detector 19 are electrically connected to the control system 10, respectively.
The exhaust pipe 15 is internally provided with a first exhaust channel 22 and a second exhaust channel 23, the exhaust pipe 15 is internally provided with a groove 24, the groove 24 is internally provided with a partition plate 25, waste gas can only pass through the first exhaust channel 22 or the second exhaust channel 23 by moving the partition plate 25, the adsorption plate 18 comprises a first adsorption plate 26 and a second adsorption plateAn adsorption plate 27, wherein an activated carbon net 28 and an ultraviolet lamp 31 are respectively arranged on the first adsorption plate 26 and the second adsorption plate 27, the activated carbon net 28 is of a honeycomb structure, a photocatalyst 29 is arranged in the activated carbon net 28, VOCs are subjected to oxidation reaction and decomposed into pollution-free H through the ultraviolet rays emitted by the ultraviolet lamp 30 and the photocatalyst 292O and CO2The purification efficiency is high, the spray painting waste gas is only adsorbed and decomposed on one adsorption plate by matching with the partition plate 25 in the groove 24, the active carbon net 28 is convenient to replace or the photocatalyst 29 is convenient to supplement at any time during working, and the photocatalyst 29 is nano TiO2The photocatalyst 29 is fixed on the activated carbon net 28 by a chemical vapor deposition method, and water collecting boxes 31 are arranged at the bottoms of the first adsorption plate 26 and the second adsorption plate 27, so that water generated by photocatalysis can be collected and treated conveniently.
Example 2
As shown in fig. 6, the difference between this embodiment and embodiment 1 is that filters 32 are installed in both the first air inlet pipe 13 and the second air inlet pipe 14, and the filters are V-shaped paper filters to prevent paint mist from entering the exhaust gas treatment device 9 and affecting the normal operation of the device.
The working principle is as follows: when the paint spraying waste gas is treated, the paint spraying waste gas is detected through the VOCs detector 19, the second electromagnetic valve 17 is opened when the concentration of VOCs is lower than a set value, the low-concentration waste gas is concentrated through the concentration wheel 12 and then is adsorbed and treated through the adsorption plate 18, purified air is discharged, the purification efficiency is high, the ineffective treatment capacity is reduced, the first electromagnetic valve 16 is opened when the concentration of VOCs reaches the set value, the second electromagnetic valve 17 is closed to directly adsorb and treat the waste gas, the paint spraying waste gas is adsorbed and decomposed on one adsorption plate through the adjusting baffle 25 after being adsorbed and treated to a certain degree, the active carbon net 28 or the photocatalyst 29 is convenient to replace at any time during work, and water generated by photocatalysis is collected and treated through the water accumulation box 31.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a paint spraying waste gas treatment process, includes paint spray booth (1), paint spray booth (1) left side is equipped with air inlet (2), paint spray booth (1) right side is equipped with gas outlet (3), install light (4) and baking finish lamp (5) in paint spray booth (1), install air-blower (6) in air inlet (2), fine filtration net (7) is installed in air-blower (6) outside, coarse filtration net (8) are installed in fine filtration net (7) outside, install exhaust treatment device (9) in gas outlet (3), its characterized in that: the waste gas treatment device (9) comprises a control system (10), a motor (11), a concentration wheel (12), a first air inlet pipe (13), a second air inlet pipe (14) and an air outlet pipe (15), the motor (11) is rotatably connected with the concentration wheel (12) through a belt, the concentration wheel (12) comprises a desorption area (20) and an adsorption area (21), the first air inlet pipe (13) is installed on the left side of the concentration wheel (12), a first electromagnetic valve (16) and a VOCs detector (19) are installed in the first air inlet pipe (13), the second air inlet pipe (14) is installed at the upper end of the first air inlet pipe (13), a second electromagnetic valve (17) is installed in the second air inlet pipe (14), the air outlet pipe (15) is installed on the right side of the concentration wheel (12), and an adsorption plate (18) is installed on the air outlet pipe (15); when the concentration of VOCs is lower than the set value, the second electromagnetic valve (17) is opened, the low-concentration waste gas is concentrated by the concentration wheel (12) and then is adsorbed by the adsorption plate (18) to be treated, and then the purified air is discharged, when the concentration of VOCs reaches the set value, the first electromagnetic valve (16) is opened, and the second electromagnetic valve (17) is closed to directly adsorb the waste gas.
2. The painting exhaust gas treatment process according to claim 1, characterized in that: the motor (11), the first electromagnetic valve (16), the second electromagnetic valve (17) and the VOCs detector (19) are respectively electrically connected with the control system (10).
3. The painting exhaust gas treatment process according to claim 1, characterized in that: be equipped with first air-out passageway (22) and second air-out passageway (23) in air-out pipe (15), still be equipped with recess (24) in air-out pipe (15), be equipped with baffle (25) in recess (24), can make waste gas only pass through in first air-out passageway (22) or only follow second air-out passageway (23) through removing baffle (25), adsorption plate (18) include first adsorption plate (26) and second adsorption plate (27), all install activated carbon net (28) and ultraviolet lamp (30) on first adsorption plate (26) and second adsorption plate (27), ultraviolet lamp (30) and control system (10) electric connection.
4. The painting exhaust gas treatment process according to claim 3, characterized in that: the activated carbon net (28) is of a honeycomb structure, and a photocatalyst (29) is arranged inside the activated carbon net (28).
5. The painting exhaust gas treatment process according to claim 4, characterized in that: the photocatalyst (29) is fixed on the activated carbon net (28) by a chemical vapor deposition method.
6. The painting exhaust gas treatment process according to claim 4 or 5, characterized in that: the photocatalyst (29) isNano TiO 22And (3) powder.
7. The painting exhaust gas treatment process according to claim 3, characterized in that: and water collecting boxes (31) are arranged at the bottoms of the first adsorption plate (26) and the second adsorption plate (27).
8. The painting exhaust gas treatment process according to claim 1, characterized in that: filters (32) are installed in the first air inlet pipe (13) and the second air inlet pipe (14), and the filters (32) are V-shaped paper filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728656.3A CN109012142B (en) | 2018-07-05 | 2018-07-05 | Paint spraying waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728656.3A CN109012142B (en) | 2018-07-05 | 2018-07-05 | Paint spraying waste gas treatment device |
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| Publication Number | Publication Date |
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| CN109012142A CN109012142A (en) | 2018-12-18 |
| CN109012142B true CN109012142B (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810728656.3A Active CN109012142B (en) | 2018-07-05 | 2018-07-05 | Paint spraying waste gas treatment device |
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| CN114534484A (en) * | 2020-11-20 | 2022-05-27 | 陕西青朗万城环保科技有限公司 | Dioxin removing method and device |
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| CN104129253A (en) * | 2013-05-01 | 2014-11-05 | 福特环球技术公司 | Climate control system having multiple adsorbers and a method of control |
| CN104971593A (en) * | 2015-07-08 | 2015-10-14 | 海湾环境科技（北京）股份有限公司 | Paint waste gas processing system and use method thereof |
| CN206660779U (en) * | 2017-01-25 | 2017-11-24 | 苏州力洁环保科技有限公司 | A kind of waste gas pollution control and treatment system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005177650A (en) * | 2003-12-22 | 2005-07-07 | Yamaha Corp | Inflammable volatile organic compounds gas treatment device, inflammable volatile organic compounds gas treatment system, and inflammable volatile organic compounds gas treatment method |
| DE102012000206A1 (en) * | 2011-10-11 | 2013-04-11 | IBL Umwelt- und Biotechnik GmbH | Process for fluid purification, preferably of organic compounds |
| CN107774093A (en) * | 2016-08-31 | 2018-03-09 | 广东汕樟轻工机械股份有限公司 | The processing equipment of packages printing industry VOCs technology waste gas |
| CN107519761A (en) * | 2017-08-29 | 2017-12-29 | 北京普惠实华科技有限公司 | A kind of organic exhaust gas catalytic oxidizing equipment and method |
| CN207413119U (en) * | 2017-09-28 | 2018-05-29 | 彩融电光源技术（上海）有限公司 | A kind of processing unit of middle low concentration VOCs gases |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129253A (en) * | 2013-05-01 | 2014-11-05 | 福特环球技术公司 | Climate control system having multiple adsorbers and a method of control |
| CN104971593A (en) * | 2015-07-08 | 2015-10-14 | 海湾环境科技（北京）股份有限公司 | Paint waste gas processing system and use method thereof |
| CN206660779U (en) * | 2017-01-25 | 2017-11-24 | 苏州力洁环保科技有限公司 | A kind of waste gas pollution control and treatment system |
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Inventor after: Zeng Zhichao Inventor after: Yang Liufeng Inventor before: Yang Liufeng |
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Effective date of registration: 20200929 Address after: Room 210C, building 358, 3663 Zhongshan North Road, Putuo District, Shanghai, 200333 Applicant after: SHANGHAI HUAMIN ENVIRONMENT TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 324200 500 meters southeast of Qingxi Street Qingshi Town Government, Changshan County, Quzhou City, Zhejiang Province Applicant before: Yang Liufeng |
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Address after: 200333 room 210C, building 358, No. 3663, Zhongshan North Road, Putuo District, Shanghai Patentee after: Shanghai Huamin environment Co.,Ltd. Address before: 200333 room 210C, building 358, No. 3663, Zhongshan North Road, Putuo District, Shanghai Patentee before: SHANGHAI HUAMIN ENVIRONMENT TECHNOLOGY DEVELOPMENT CO.,LTD. |