CN110026030A - A kind of cleanable filter - Google Patents
A kind of cleanable filter Download PDFInfo
- Publication number
- CN110026030A CN110026030A CN201910223739.1A CN201910223739A CN110026030A CN 110026030 A CN110026030 A CN 110026030A CN 201910223739 A CN201910223739 A CN 201910223739A CN 110026030 A CN110026030 A CN 110026030A
- Authority
- CN
- China
- Prior art keywords
- filter
- filter paper
- cleanable
- outline border
- filter core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000004888 barrier function Effects 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 239000000565 sealant Substances 0.000 claims description 4
- 239000004831 Hot glue Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 18
- 239000008187 granular material Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005406 washing Methods 0.000 abstract description 11
- 230000001681 protective effect Effects 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 230000001939 inductive effect Effects 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
- B01D46/0002—Casings; Housings; Frame constructions
-
- 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
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
-
- 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
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- 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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
Abstract
The present invention provides a kind of cleanable filter, including outline border and filter core, and the middle part of outline border is filtration channel, two sides form air inlet and air outlet, filter core includes filter paper, and the one side that filter paper corresponds to air inlet is equipped with microporous barrier, and the one side that filter paper corresponds to air outlet is equipped with fixed strip；Microporous barrier can stop the dust granules in air outside filter paper, avoid influencing filter effect in dust granules intrusion filter paper；Meanwhile microporous barrier have excellent waterproof and breathable performance so that filter core have the characteristics that it is capable of washing, and microporous barrier to filter paper have protective effect, guarantee clean after-filter working efficiency do not reduce substantially；The one side that filter paper corresponds to air outlet is equipped with fixed strip, ensure that the support and fixed function to filter paper, and filter paper is not provided with fixed strip corresponding to air inlet on one side, and dirt effect is held in enhancing；Filter core and outline border are Demountable, reuse after filter core is capable of washing, can extend the service life of filter, reduce replacement cost.
Description
Technical field
The present invention relates to filter apparatus field more particularly to a kind of cleanable filters.
Background technique
As the products such as electronics and semiconductor are for the continuous improvement of environmental requirement, there are more and more air cleanings
Equipment, and in these air cleaning facilities, it largely requires to be dusted air using filter, existing filter
Be broadly divided into baffle filter and non-inductive windings filter, compared with having baffle filter, non-inductive windings filter have it is small in size,
It is light-weight, be easily installed, the advantage that stabilised efficiency, wind speed are uniform, further improve the uniformity for holding dirt, extend using the longevity
Life, therefore be widely used in in the higher clean room of environmental requirement.But the filter core of existing non-inductive windings filter is general
To be disposable, not capable of washing and repetition is utilized, and service life is shorter, higher operating costs.
Summary of the invention
The purpose of the present invention is to provide a kind of cleanable filter, filter core is reused after can cleaning, and reduction makes
Use cost.
To achieve the above object, present invention employs following technical solutions:
A kind of cleanable filter, including outline border and filter core, the outline border are hollow structure, and the middle part of the outline border is filtering
Channel, the two sides of the outline border form air inlet and air outlet, and the filter core is set in the filtration channel, and the filter core includes
Filter paper, the one side that the filter paper corresponds to the air inlet are equipped with microporous barrier, and the filter paper corresponds to the one side of the air outlet
Equipped with fixed strip.
Preferably, the microporous barrier is waterproof PTFE(polytetrafluoroethylene (PTFE)) material.
Preferably, mask net is equipped at the air outlet, the mask net is fixed on the outline border, described for increasing
The firmness of filter core avoids the filter paper from being blown deformation or bulging.
Preferably, the filter paper is in pleated, and the fixed strip is arranged along the pleated extending direction of the filter paper.
Preferably, the outline border has opposite folding side and fixed edge, and the folding side and the fixed edge are detachable
The inside of ground connection, the fixed edge is equipped with guide groove.
Preferably, the fixed edge is U-shaped, and the one end on the folding side and the one end of the U-shaped fixed edge are cut with scissors
It connects, the other end on the folding side and the other end of the fixed edge are detachably connected by connector.
Preferably, the filter core further includes inside casing, and the filter paper is set to the inside of the inside casing, described in inside casing insertion
In guide groove.
Preferably, the junction of the inside casing and the filter paper is equipped with sealant, for fixing the edge of the filter paper
On the inner wall of the inside casing, guarantee airtightness.
Preferably, the filter paper is equipped with folding line, the folding line interval setting, preferably, being arranged at equal intervals.
Preferably, the fixed strip is hot melt adhesive.
Compared with prior art, cleanable filter of the invention has the advantages that
(1) one side that filter paper corresponds to air inlet is equipped with microporous barrier, and the micropore in microporous barrier is evenly distributed, and porosity is big, is protecting
While holding air circulation, all dust granules including bacterium can be filtered, dust granules can be stopped in filter paper
Outside avoids influencing filter effect in dust granules intrusion filter paper；Meanwhile the aperture of microporous barrier is greater than the straight of water vapour molecule
Diameter, much smaller than the diameter of hydrone, therefore microporous barrier has excellent waterproof and breathable performance, so that filter core has spy capable of washing
Point, and microporous barrier has protective effect to filter paper when cleaning, guarantees that the working efficiency of cleaning after-filter does not reduce substantially；And
And the microporous barrier of setting, dust granules are stopped outside filter paper, conventional bowl internal cause dust is even more solved and is embedded into filter core
It is interior, lead to not the technical problem cleaned up.
(2) use waterproof PTFE(polytetrafluoroethylene (PTFE)) material preparation microporous barrier although waterproof, can be used for cleaning, but this
The micropore membrane resistance of kind material preparation is larger, is easy to cause filter core filter paper to deform, in order to overcome this technical problem, on the one hand,
The one side that filter paper of the present invention corresponds to air outlet is equipped with fixed strip, ensure that the support and fixed function to filter paper；Filter paper is corresponding
It is not provided with fixed strip on one side in air inlet, enhances the appearance dirt effect of filter core；On the other hand, further at air outlet also
Equipped with mask net, mask net is fixed on outline border, further increases the firmness of filter core, avoid the filter paper blown deformation or
Bulging.
(3) filter core and outline border are Demountable, are reused after filter core is capable of washing, the service life of filter compared with
It is long, so as to reduce replacement cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of cleanable filter of the embodiment of the present invention 1；
Fig. 2 is a kind of structural schematic diagram of another angle of cleanable filter of the embodiment of the present invention 1；
Fig. 3 is a kind of structural schematic diagram of the outline border of cleanable filter of the embodiment of the present invention 1；
Fig. 4 is a kind of structural schematic diagram of the filter core of cleanable filter of the embodiment of the present invention 1；
Fig. 5 is the structural schematic diagram after a kind of filter paper expansion of cleanable filter of the embodiment of the present invention 1.
Specific embodiment
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby cooperate embodiment detailed
It is described as follows.
Incorporated by reference to referring to Fig. 1 to Fig. 5, Fig. 1 is a kind of structural representation of cleanable filter of the embodiment of the present invention 1
Figure；Fig. 2 is a kind of structural schematic diagram of another angle of cleanable filter of the embodiment of the present invention 1；Fig. 3 is that the present invention is real
Apply a kind of structural schematic diagram of the outline border of cleanable filter of example 1；Fig. 4 is a kind of cleanable of the embodiment of the present invention 1
The structural schematic diagram of the filter core of filter；Fig. 5 is after a kind of filter paper of cleanable filter of the embodiment of the present invention 1 is unfolded
Structural schematic diagram.
A kind of cleanable filter of the embodiment of the present invention 1, including outline border 1 and filter core 2, outline border 1 are hollow structure, outside
The middle part of frame 1 is filtration channel 3, and the two sides of outline border 1 form air inlet 4 and air outlet 5, and filter core 2 is set in filtration channel 3, filter
Core 2 includes filter paper 6, and the one side that filter paper 6 corresponds to air inlet 4 is equipped with microporous barrier, and the one side that filter paper 6 corresponds to air outlet 5 is equipped with
Fixed strip 7.Filter core 2 is for being filtered the dust granules in dust laden air, and the micropore in microporous barrier is evenly distributed, porosity
Greatly, while maintaining the circulation of air, all dust granules in air filtering can be crossed, dust granules can be stopped in filter paper
Outside 6, avoid influencing filter effect in dust granules intrusion filter paper 6；Meanwhile the aperture of microporous barrier is greater than the straight of water vapour molecule
Diameter, and it is much smaller than the diameter of hydrone, therefore microporous barrier has excellent waterproof and breathable performance, so that filter core 2 is with capable of washing
The characteristics of, and microporous barrier has protective effect to filter paper 6 when cleaning, guarantees that the working efficiency of cleaning after-filter does not drop substantially
It is low；Fixed strip 7 plays the role of fixing and supporting to filter paper 6, to enhance the firmness of filter paper 6, avoids 6 quilt of filter paper in use
Blow deformation；Filter paper 6 is not provided with fixed strip 7 corresponding to air inlet 4 on one side, can improve the appearance dirt effect of filter paper 6.
Preferably, microporous barrier is waterproof PTFE(polytetrafluoroethylene (PTFE)) material, with excellent waterproof and breathable performance, toughness
Good, filter effect is good, can be blocked in the dust granules in air outside filter paper 6, realizes the function capable of washing of filter core 2, and
The working efficiency of cleaning after-filter does not reduce substantially, is conducive to extend the service life of filter, reduces replacement cost.
Preferably, mask net 15 is equipped at air outlet 5, mask net 15 is fixed on outline border 1.Further, mask net 15
Mesh be diamond shape or honeycombed.Mask net 15 is used to increase the firmness of filter core 2, and filter paper 6 is avoided to be blown deformation or bulging, from
And it is able to extend the service life of filter core 2.
Preferably, filter paper 6 is in pleated, and a plurality of fixed strip 7 is arranged along the pleated extending direction of filter paper 6.Pass through rational design
The pleat of filter paper 6 is high, and filter is enabled to reach maximum dust containing capacity when resistance minimum, ensure that higher poly- dirt rate and
It is preferable to hold dirt effect.
Preferably, outline border 1 has opposite folding side 8 and fixed edge 9, opens and closes side 8 and fixed edge 9 is detachably connected,
The inside of fixed edge 9 is equipped with guide groove 10；Further, fixed edge 7 is U-shaped, the one end on folding side 8 and U-shaped fixed edge 9
One end it is hinged, open and close side 8 the other end and fixed edge 9 the other end pass through connector 11 it is detachably connected.
Preferably, filter core 2 further includes inside casing 12, and filter paper 6 is set to the inside of inside casing 12, and inside casing 12 is embedded in guide groove 10.
The structure of guide groove 10 and the structure of inside casing 12 match, and guarantee that filter core 2 is in stability and leakproofness in outline border 1.Outline border 1
Detachable structure, outline border 1 and filter core 2 split type structure, help to realize the function capable of washing of filter core 2, facilitate installation, clear
Filter core 2 is washed or replaced, the recycling of outline border 1 and filter core 2 is conducive to.
Preferably, the junction of inside casing 12 and filter paper 6 is equipped with sealant 13, and sealant 13 is for consolidating the edge of filter paper 6
It is scheduled on the inner wall of inside casing 12, guarantees airtightness, realize filtration of the filter core 2 to dust laden air.
Preferably, filter paper 6 is equipped with folding line 14, and the setting of the interval of folding line 14 is preferably arranged, it is ensured that form filter paper at equal intervals
6 contour pleat shape forms the reasonable contour pleat shape of filter paper 6 and pleat number, enabled to by rationally designing the interval of folding line 14
Filter can reach maximum dust containing capacity when resistance minimum.
Preferably, a plurality of fixed strip 7 is hot melt adhesive, for fixing and supporting filter paper 6, is subtracted when using or cleaning filter core 2
Small filter paper 6 deforms.
Further, the aperture of microporous barrier is 0.2-0.5 micron, is applicable to the filtering of the filters such as middle effect, sub- efficient
Scene.When cleanable filter of the invention is using being medium effeciency filter, the aperture of microporous barrier is 0.3-0.5 microns, filtering
Efficiency reaches 85% or more；When using for inferior high efficiency filter, the aperture of microporous barrier is 0.2-0.5 microns, and filter efficiency reaches
95% or more, and can be realized filter core function capable of washing, reduce use cost.
Meanwhile the outline border 1 of cleanable filter of the invention preferably uses firm aluminum alloy frame, is not easy to get rusty,
Long service life is firm in structure steady, it is ensured that filter is also unlikely to deformation or damage under poor working environment.
In conclusion the present invention provides a kind of cleanable filter, the one side that filter paper 6 corresponds to air inlet 4 is equipped with micro-
Pore membrane, the micropore in microporous barrier are evenly distributed, and porosity is big, while maintaining the circulation of air, can cross the dirt in air filtering
Angstrom particle can stop dust granules outside filter paper 6, avoid influencing filter effect in dust granules intrusion filter paper 6；Together
When, the aperture of microporous barrier is greater than the diameter of water vapour molecule, and is much smaller than the diameter of hydrone, therefore microporous barrier is with excellent
Waterproof and breathable performance so that filter core 2 have the characteristics that it is capable of washing, and clean when microporous barrier to filter paper 6 have protective effect, guarantee
The working efficiency of cleaning after-filter does not reduce substantially；The one side that filter paper 6 corresponds to air outlet 5 is equipped with fixed strip 7, fixed strip 7
Play the role of fixing and supporting to filter paper 6, to enhance the firmness of filter paper 6, filter paper 6 in use is avoided to be blown deformation；Filter
Paper 6 is not provided with fixed strip 7 corresponding to air inlet 4 on one side, can improve the appearance dirt effect of filter paper 6；The detachable structure of outline border 1,
The detachable structure of outline border 1 and filter core 2 helps to realize the function capable of washing of filter core 2, facilitates installation, cleaning or replacement filter core
2, be conducive to the recycling of outline border 1 and filter core 2, be able to extend the service life of filter, reduces use cost.
The present invention is described by above-mentioned related embodiment, however above-described embodiment is only to implement example of the invention.
It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from spirit of the invention and
It is changed and retouched made by range, belongs to scope of patent protection of the invention.
Claims (10)
1. a kind of cleanable filter, including outline border and filter core, the outline border is hollow structure, and the middle part of the outline border was
Channel is filtered, the two sides of the outline border form air inlet and air outlet, and the filter core is set in the filtration channel, and feature exists
In: the filter core includes filter paper, and the one side that the filter paper corresponds to the air inlet is equipped with microporous barrier, and the filter paper corresponds to institute
The one side for stating air outlet is equipped with fixed strip.
2. cleanable filter as described in claim 1, it is characterised in that: the microporous barrier is the preparation of waterproof PTFE material
It forms.
3. cleanable filter as described in claim 1, it is characterised in that: mask net is equipped at the air outlet, it is described
Mask net is fixed on the outline border, for increasing the firmness of the filter core, the filter paper is avoided to be blown deformation or bulging.
4. cleanable filter as described in claim 1, it is characterised in that: the filter paper is in pleated, the fixed strip edge
The pleated extending direction of the filter paper is arranged.
5. cleanable filter as described in claim 1, it is characterised in that: the outline border is with opposite folding side and admittedly
Deckle, the folding side and the fixed edge are detachably connected, and the inside of the fixed edge is equipped with guide groove.
6. cleanable filter as claimed in claim 5, it is characterised in that: the fixed edge is U-shaped, the folding side
One end and the one end of the U-shaped fixed edge are hinged, the other end on the folding side and the other end of the fixed edge
It is detachably connected by connector.
7. cleanable filter as claimed in claim 5, it is characterised in that: the filter core further includes inside casing, the filter paper
Set on the inside of the inside casing, the inside casing is embedded in the guide groove.
8. cleanable filter as claimed in claim 7, it is characterised in that: the junction of the inside casing and the filter paper is set
There is sealant, for the edge of the filter paper to be fixed on to the inner wall of the inside casing, guarantees airtightness.
9. cleanable filter as described in claim 1, it is characterised in that: the filter paper is equipped with folding line, the folding line
Interval setting.
10. cleanable filter as described in claim 1, it is characterised in that: the fixed strip is hot melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223739.1A CN110026030A (en) | 2019-03-22 | 2019-03-22 | A kind of cleanable filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223739.1A CN110026030A (en) | 2019-03-22 | 2019-03-22 | A kind of cleanable filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110026030A true CN110026030A (en) | 2019-07-19 |
Family
ID=67236476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910223739.1A Pending CN110026030A (en) | 2019-03-22 | 2019-03-22 | A kind of cleanable filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110026030A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090196A (en) * | 2020-07-23 | 2020-12-18 | 上海慧净空气过滤器有限公司 | High-efficiency filter |
| CN113476995A (en) * | 2021-08-04 | 2021-10-08 | 河北秦柠生物科技有限公司 | Copper oxide filter screen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0082106A2 (en) * | 1981-12-16 | 1983-06-22 | DELBAG-LUFTFILTER GmbH | Compact universal large-scale filter system of the unit construction principle for cleaning air |
| CN104492176A (en) * | 2014-12-23 | 2015-04-08 | 美埃（中国）环境净化有限公司 | High-strength HEPA filter |
| CN205095569U (en) * | 2015-10-15 | 2016-03-23 | 常州市骠马工业机器人系统工程有限公司 | Filter device |
| CN107530647A (en) * | 2015-05-07 | 2018-01-02 | 日东电工株式会社 | Filter filtration material and filter unit |
| CN208244282U (en) * | 2018-03-08 | 2018-12-18 | 袁金华 | A kind of car air filtering core |
| CN209952472U (en) * | 2019-03-22 | 2020-01-17 | 美埃（中国）环境净化有限公司 | Cleanable filter |
-
2019
- 2019-03-22 CN CN201910223739.1A patent/CN110026030A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0082106A2 (en) * | 1981-12-16 | 1983-06-22 | DELBAG-LUFTFILTER GmbH | Compact universal large-scale filter system of the unit construction principle for cleaning air |
| CN104492176A (en) * | 2014-12-23 | 2015-04-08 | 美埃（中国）环境净化有限公司 | High-strength HEPA filter |
| CN107530647A (en) * | 2015-05-07 | 2018-01-02 | 日东电工株式会社 | Filter filtration material and filter unit |
| CN205095569U (en) * | 2015-10-15 | 2016-03-23 | 常州市骠马工业机器人系统工程有限公司 | Filter device |
| CN208244282U (en) * | 2018-03-08 | 2018-12-18 | 袁金华 | A kind of car air filtering core |
| CN209952472U (en) * | 2019-03-22 | 2020-01-17 | 美埃（中国）环境净化有限公司 | Cleanable filter |
Non-Patent Citations (2)
| Title |
|---|
| 姚仲鹏: "《空气净化原理、设计与应用》", 30 September 2014, pages: 77 * |
| 王丽萍等: "《大气污染控制工程》", 31 August 2012, pages: 166 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090196A (en) * | 2020-07-23 | 2020-12-18 | 上海慧净空气过滤器有限公司 | High-efficiency filter |
| CN113476995A (en) * | 2021-08-04 | 2021-10-08 | 河北秦柠生物科技有限公司 | Copper oxide filter screen |
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Address after: 210 000 Lanxia Road 101, Ziling Street, Jiangning District, Nanjing City, Jiangsu Province Applicant after: Meier (China) Environmental Technology Co., Ltd Address before: 210 000 Lanxia Road 101, Ziling Street, Jiangning District, Nanjing City, Jiangsu Province Applicant before: MAYAIR TECHNOLOGY (CHINA) Co.,Ltd. |