CN113864952A - Air purification device for indoor formaldehyde removal - Google Patents
Air purification device for indoor formaldehyde removal Download PDFInfo
- Publication number
- CN113864952A CN113864952A CN202110975850.3A CN202110975850A CN113864952A CN 113864952 A CN113864952 A CN 113864952A CN 202110975850 A CN202110975850 A CN 202110975850A CN 113864952 A CN113864952 A CN 113864952A
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- Prior art keywords
- air
- filter plate
- chamber
- settling
- indoor
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Links
- 238000004887 air purification Methods 0.000 title claims abstract description 13
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title description 15
- 238000000746 purification Methods 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 16
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract description 13
- 230000004913 activation Effects 0.000 claims abstract description 10
- 239000011941 photocatalyst Substances 0.000 claims abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052709 silver Inorganic materials 0.000 claims abstract description 5
- 239000004332 silver Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003905 indoor air pollution Methods 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
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
Abstract
The invention provides an air purification device for indoor aldehyde removal, wherein a settling chamber, a purification chamber and an air supply channel are arranged in a box body and distributed from bottom to top; an exhaust fan is arranged on the side surface of the settling chamber, a Lorentz settling component is arranged in the settling chamber, and the Lorentz force of the Lorentz settling component is vertical to the rotating shaft of the exhaust fan; the purification chamber is internally provided with a second filter plate, the second filter plate is a net-shaped filter structure woven by warps and wefts, the warps comprise a first wire main body and photocatalyst wires wound outside, the wefts comprise a second wire main body and metal silver wires wound outside, and one side of the second filter plate is provided with an ultraviolet light activation module; the air supply channel is internally provided with a charged particle generator. The invention can settle most harmful substances, reduces the burden of the filter plate, maintains the working performance of the second filter plate without replacement, and has convenient use and environmental protection.
Description
Technical Field
The invention relates to the field of air purification, and particularly discloses an air purification device for indoor formaldehyde removal.
Background
The air purifying device is used for purifying air, and mainly circularly purifies indoor air through an air extracting mechanism and an air supplying mechanism.
Along with the continuous improvement of living standard of people, the attention of people to health is higher and higher, and indoor air pollution is a problem which is very concerned about and needs to be solved urgently. Thousands of indoor air pollutants, such as kitchen oil smoke, fiber flock, formaldehyde, ammonia gas and the like, particularly formaldehyde, are extremely harmful to human bodies, and cause health problems of different degrees.
Among the prior art, air purification device mainly uses the filter screen of different density to carry out filtration purification to the air, and main filtration adsorption material adopts disposable purifying material such as active carbon, when reaching service life such as saturation, needs to change the filter screen, uses inconveniently, and not environmental protection.
Disclosure of Invention
Based on this, it is necessary to provide an air purification device for indoor aldehyde that removes to prior art problem, can effectively purify room air, and the work burden of filter structure is lower, convenient to use, environmental protection.
In order to solve the prior art problem, the invention discloses an air purification device for indoor aldehyde removal, which comprises a box body, wherein a settling chamber, a purification chamber and an air supply channel are arranged in the box body from bottom to top in sequence;
an air inlet is formed in the side face of the settling chamber, an exhaust fan is arranged in the air inlet, a Lorentz settling assembly is arranged in the settling chamber, and the Lorentz force of the Lorentz settling assembly is perpendicular to the rotating shaft of the exhaust fan;
the purifying chamber is internally provided with a second filter plate, the second filter plate is a net-shaped filter structure woven by warps and wefts, the warps comprise a first line main body and photocatalyst wires wound outside the first line main body, the wefts comprise a second line main body and metal silver wires wound outside the second line main body, and one side of the second filter plate, which is close to the air feeder, is provided with an ultraviolet light activation module;
the charged particle generator is arranged in the air supply channel, and one end of the air supply channel, which is far away from the air feeder, is connected with an air outlet pipe.
Further, the lorentz sedimentation component is a magnetic field generator.
Further, the first filter plate is an active carbon filter screen.
Furthermore, one side of the settling chamber is movably connected with a cleaning door.
Further, the first and second string bodies are both fiberglass strings.
Further, the ultraviolet activation module includes UV light source and speculum, and the plane of reflection of speculum is towards UV light source and second filter.
Further, the charged particle generator is a negative ion generator.
Furthermore, a spiral driving blade is connected in the air outlet pipe in a rotating mode, the rotating shaft of the driving blade is overlapped with the rotating shaft of the air feeder, a gap is formed between the driving blade and the inner wall of the air outlet pipe, and the top of the driving blade is connected with an air deflector.
The invention has the beneficial effects that: the invention discloses an air purification device for indoor aldehyde removal, which is provided with a special energizing and settling structure, can enable output airflow to carry electric charges, and can be efficiently settled when the airflow enters the device again after being subjected to indoor adsorption and purification, so that most harmful substances are settled and screened, the workload of a subsequent filter plate structure can be effectively reduced, the second filter plate has special decomposition and purification capacity on the harmful substances such as formaldehyde, bacteria and the like, the purification effect can be effectively improved, meanwhile, the second filter plate can ensure the purification capacity through an ultraviolet light activation module, the working performance is not required to be maintained through replacement, and the air purification device is convenient to use and environment-friendly.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural view of the warp yarn of the present invention.
FIG. 3 is a schematic view showing the structure of the weft in the present invention.
The reference signs are: the device comprises a box body 10, a settling chamber 20, an air inlet 21, an exhaust fan 22, a Lorentz settling assembly 23, a first filter plate 24, a cleaning door 25, a purification chamber 30, a second filter plate 31, a first line main body 311, a photocatalyst line 312, a second line main body 313, a metal silver line 314, an ultraviolet light activation module 32, a UV light source 321, a reflector 322, an air supply channel 40, an air supply fan 41, a charged particle generator 42, an air outlet pipe 50, a driving blade 51 and an air guide plate 52.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 to 3.
The embodiment of the invention discloses an air purification device for indoor aldehyde removal, which comprises a box body 10, wherein a settling chamber 20, a purification chamber 30 and an air supply channel 40 are arranged in the box body 10 and are sequentially distributed from bottom to top, a first filter plate 24 is separated at the joint between the settling chamber 20 and the purification chamber 30, and an air feeder 41 is separated at the joint between the purification chamber 30 and the air supply channel 40, namely the first filter plate 24 and the air feeder 41 divide the interior of the box body 10 into the settling chamber 20, the purification chamber 30 and the air supply channel 40;
an air inlet 21 is arranged on the side surface of the settling chamber 20, an exhaust fan 22 is arranged in the air inlet 21, a Lorentz settling component 23 is arranged in the settling chamber 20, the Lorentz force of the Lorentz settling component 23 is vertical to the rotating shaft of the exhaust fan 22, and the charged particles entering the settling chamber are settled through the corresponding Lorentz force;
the purification chamber 30 is provided with a second filter plate 31, the second filter plate 31 is a mesh-shaped filter structure woven by warps and wefts, the warps comprise a first line main body 311 and photocatalyst wires 312 wound outside the first line main body 311, the wefts comprise a second line main body 313 and metal silver wires 314 wound outside the second line main body 313, and one side of the second filter plate 31 close to the blower 41 is provided with an ultraviolet light activation module 32;
the air supply channel 40 is provided with a charged particle generator 42, one end of the air supply channel 40 far away from the air blower 41 is connected with an air outlet pipe 50, and the charged air flow is sent out through the air outlet pipe 50.
The working process of the invention is as follows: after the charged particle generator 42 generates charged particles, the blower 41 sends an airflow upwards and wraps the charged particles to the air outlet pipe 50, the air outlet pipe 50 sends the charged airflow to the indoor space, the charged airflow reaching the indoor space can effectively adsorb harmful substances such as formaldehyde and the like in the indoor space, and the charged airflow adsorbs the harmful substances and then settles to the vicinity of the indoor ground; the exhaust fan 22 positioned near the ground can efficiently and pertinently suck the charged air flow which is near the ground and has completed the adsorption action into the settling chamber 20, after the charged air flow enters the settling chamber 20, the charged particles and the harmful substances carried by the charged particles move downwards under the action of the Lorentz force of the Lorentz settling assembly 23 and settle to the bottom of the settling chamber 20, so that the settlement of most harmful substances is realized, the workload of the subsequent two filter plates can be remarkably reduced, and the service life of each filter plate is effectively prolonged; harmful substances which do not settle enter the purifying chamber 30 after being filtered by the first filter plate 24, the air flow can effectively decompose the harmful substances such as formaldehyde and bacteria carried by the air flow when passing through the second filter plate 31, and the ultraviolet light activation module 32 can effectively keep the purifying activity of the second filter plate 31, so that the purifying effect of the air flow is ensured, the second filter plate 31 does not need to ensure the air purifying performance in a replacement mode, and the air flow purifying device is convenient to use and environment-friendly; the air flow passing through the cleaning chamber 30 is drawn into the blowing duct 40 by the blower 41 and is re-charged by the charged particle generator 42, and the above-described circulation is continued, whereby the efficient indoor air cleaning operation can be realized. The warp and weft of constituteing second filter 31 can effectively improve overall structure's filtration purification performance including photocatalyst line 312 and the silver-colored line 314 that possesses different purifying effect, and just two kinds of function line structures of aforesaid twine respectively outside two line main parts, can effectively ensure overall structure's toughness.
In this embodiment, the lorentz settling component 23 is a magnetic field generator, i.e. a magnetic field coil, the normal of which is perpendicular to the rotation axis of the suction fan 22; the lorentz settling component 23 can also be a structure such as a magnet which can form a corresponding magnetic field, so that the cost can be effectively reduced.
In this embodiment, the first filter plate 24 is an activated carbon filter screen.
In this embodiment, a cleaning door 25 is movably connected to one side of the settling chamber 20, the cleaning door 25 can be hinged to the settling chamber 20, and the cleaning door 25 can be opened to quickly clean harmful substances settled in the settling chamber 20.
In this embodiment, the first wire body 311 and the second wire body 313 are both made of glass fiber, and the glass fiber has good toughness, so that the structural stability of the second filter plate 31 can be ensured.
In this embodiment, the UV activation module 32 includes the UV light source 321 and the reflector 322, the reflecting surface of the reflector 322 faces the UV light source 321 and the second filter plate 31, the irradiation range of the UV light can be effectively improved through the combination of the UV light source 321 and the reflector 322, the number of the UV light sources 321 can be reduced, and the energy utilization rate of the whole structure is improved.
In the present embodiment, the charged particle generator 42 is a negative ion generator, and can give a negative charge to the passing airflow, and can effectively control the settling direction of the charged electric current after entering the settling chamber 20.
In this embodiment, a spiral driving blade 51 is rotatably connected in the air outlet pipe 50, a rotation axis of the driving blade 51 coincides with a rotation axis of the blower 41, a gap is formed between the driving blade 51 and an inner wall of the air outlet pipe 50, and it can be effectively ensured that the airflow can pass through smoothly through the gap, and it is avoided that the driving blade 51 blocks the air outlet pipe 50 completely, an air deflector 52 is connected to a top of the driving blade 51, the driving blade 51 rotates under the driving of the vertical airflow from the blower 41, and drives the air deflector 52 to rotate synchronously, so that the flow of the charged airflow can be controlled to be sent out in different directions, and it can be ensured that the charged particle airflow can be obtained in each indoor area space, thereby forming a good indoor harmful substance adsorption and purification effect.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The air purification device for indoor aldehyde removal is characterized by comprising a box body (10), wherein a settling chamber (20), a purification chamber (30) and an air supply channel (40) are arranged in the box body (10) and sequentially distributed from bottom to top, a first filter plate (24) is separated between the settling chamber (20) and the purification chamber (30), and an air supply fan (41) is separated between the purification chamber (30) and the air supply channel (40);
an air inlet (21) is formed in the side face of the settling chamber (20), an exhaust fan (22) is arranged in the air inlet (21), a Lorentz settling assembly (23) is arranged in the settling chamber (20), and the Lorentz force of the Lorentz settling assembly (23) is perpendicular to the rotating shaft of the exhaust fan (22);
the purifying chamber (30) is internally provided with a second filter plate (31), the second filter plate (31) is a net-shaped filter structure woven by warps and wefts, the warps comprise a first wire main body (311) and photocatalyst wires (312) wound outside the first wire main body (311), the wefts comprise a second wire main body (313) and metal silver wires (314) wound outside the second wire main body (313), and one side, close to the air blower (41), of the second filter plate (31) is provided with an ultraviolet light activation module (32);
the device is characterized in that a charged particle generator (42) is arranged in the air supply channel (40), and one end, far away from the air supply machine (41), of the air supply channel (40) is connected with an air outlet pipe (50).
2. An air cleaning device for indoor aldehyde removal according to claim 1, wherein the Lorentz precipitation assembly (23) is a magnetic field generator.
3. The air cleaning apparatus for indoor removal of aldehydes as claimed in claim 1, wherein said first filter plate (24) is an activated carbon filter screen.
4. The air cleaning device for indoor aldehyde removal according to claim 1, wherein a cleaning door (25) is movably connected to one side of the settling chamber (20).
5. The air cleaning apparatus for indoor removal of aldehydes according to claim 1, wherein the first and second string main bodies (311, 313) are each a glass fiber string.
6. The air cleaning apparatus for indoor aldehyde removal according to claim 1, wherein the UV activation module (32) comprises a UV light source (321) and a reflector (322), and a reflective surface of the reflector (322) faces the UV light source (321) and the second filter plate (31).
7. The air cleaning device for indoor aldehyde removal according to claim 1, wherein the charged particle generator (42) is a negative ion generator.
8. The air purification device for indoor aldehyde removal according to claim 1, wherein a spiral driving blade (51) is rotatably connected in the air outlet pipe (50), a rotating shaft of the driving blade (51) coincides with a rotating shaft of the blower (41), a gap is formed between the driving blade (51) and an inner wall of the air outlet pipe (50), and a wind deflector (52) is connected to a top of the driving blade (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110975850.3A CN113864952A (en) | 2021-08-24 | 2021-08-24 | Air purification device for indoor formaldehyde removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110975850.3A CN113864952A (en) | 2021-08-24 | 2021-08-24 | Air purification device for indoor formaldehyde removal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113864952A true CN113864952A (en) | 2021-12-31 |
Family
ID=78988232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110975850.3A Pending CN113864952A (en) | 2021-08-24 | 2021-08-24 | Air purification device for indoor formaldehyde removal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113864952A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814308A (en) * | 2005-02-03 | 2006-08-09 | 明辉光源科技(深圳)有限公司 | Environmental-protection photoelectron extreme ultraviolet-radiation air-disiufecting machine |
| CN201768462U (en) * | 2010-01-28 | 2011-03-23 | 丁宏广 | Functional automobile air conditioner filter |
| CN204619626U (en) * | 2015-02-03 | 2015-09-09 | 成都冠禹科技有限公司 | A kind of multistage filtering formula waste gas purification apparatus |
| CN210302875U (en) * | 2019-06-28 | 2020-04-14 | 东莞市鹏驰净化科技有限公司 | Improvement type photodissociation filter |
| CN112007429A (en) * | 2019-05-29 | 2020-12-01 | 扬技实业有限公司 | Method for manufacturing photocatalyst filter screen and air purification device formed by photocatalyst filter screen |
-
2021
- 2021-08-24 CN CN202110975850.3A patent/CN113864952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814308A (en) * | 2005-02-03 | 2006-08-09 | 明辉光源科技(深圳)有限公司 | Environmental-protection photoelectron extreme ultraviolet-radiation air-disiufecting machine |
| CN201768462U (en) * | 2010-01-28 | 2011-03-23 | 丁宏广 | Functional automobile air conditioner filter |
| CN204619626U (en) * | 2015-02-03 | 2015-09-09 | 成都冠禹科技有限公司 | A kind of multistage filtering formula waste gas purification apparatus |
| CN112007429A (en) * | 2019-05-29 | 2020-12-01 | 扬技实业有限公司 | Method for manufacturing photocatalyst filter screen and air purification device formed by photocatalyst filter screen |
| CN210302875U (en) * | 2019-06-28 | 2020-04-14 | 东莞市鹏驰净化科技有限公司 | Improvement type photodissociation filter |
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Effective date of registration: 20220422 Address after: 523378 Building 2, No. 2, Langwei Road, Tangjiao, Chashan Town, Dongguan City, Guangdong Province Applicant after: Dongguan pengchi Intelligent Equipment Technology Co.,Ltd. Address before: 523378 Building 1, office building 2, Langwei Road, Tangjiao, Chashan Town, Dongguan City, Guangdong Province Applicant before: DONGGUAN PENGCHI PURIFICATION TECHNOLOGY Co.,Ltd. |
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Application publication date: 20211231 |
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