CN111193193A - Method for manufacturing discharge electrode assembly - Google Patents
Method for manufacturing discharge electrode assembly Download PDFInfo
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- CN111193193A CN111193193A CN202010060786.1A CN202010060786A CN111193193A CN 111193193 A CN111193193 A CN 111193193A CN 202010060786 A CN202010060786 A CN 202010060786A CN 111193193 A CN111193193 A CN 111193193A
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- voltage applying
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
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- Manufacturing & Machinery (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
The invention discloses a manufacturing method of a discharge electrode assembly, wherein the discharge electrode assembly comprises a voltage applying part, a line pressing terminal, a packaging part and a discharge core body, and the manufacturing method comprises the following steps: (a) designing an injection mold of the packaging part; (b) manufacturing a wire pressing terminal and a voltage applying part; (c) integrally molding and packaging the voltage applying part and the packaging part; (d) intercepting the discharging core bodies with proper length, crimping and sleeving a plurality of discharging core bodies at one end of the voltage applying part close to the discharging part by using a crimping clamp, compressing and sleeving the discharging core bodies tightly, and burning off redundant burrs of the discharging core bodies by using high-temperature fire to ensure that the discharging parts of the discharging core bodies are clean and tidy. The voltage applying part, the discharge core body or the wire pressing terminal and the packaging part are integrally formed and sealed in an injection molding mode and the like, and meanwhile, the packaging part is provided with a clamping groove, a sealing ring and other waterproof mechanisms, so that the discharge electrode assembly which is difficult to bend, is sealed and waterproof, is convenient to assemble, and is safe and stable is formed.
Description
Technical Field
The invention relates to the fields of beauty care, clean air and medical appliances, in particular to a manufacturing method of a discharge electrode assembly.
Background
The nanometer water ions have the advantages of small particle size, easy absorption, deep cleaning, water replenishing, beauty maintaining, sterilization, disinfection, medical repair and the like, and gradually become research hotspots in the fields of beauty maintaining, recuperation and nursing. The discharge electrode assembly is used as a key component of the nano water ion generating device, the performance of the discharge electrode assembly determines the stability and the safety of the operation of the nano water ion generating device, a reference 1 (application number 201810521592.X) provides a graphene nano steam generating device and a cosmetic instrument, and a reference 2 (application number 201910471756.7) provides a nano ion cosmetic steam generating device, which can realize the generation of nano ion steam, but mainly has the following three defects:
(1) no detailed, practical manufacturing process for the discharge electrode assembly is involved.
(2) The voltage applying part is arranged in a simple 1 shape and is easily pulled out from the packaging part to be damaged; the discharge core and the voltage applying part are not firmly fixed, and are easy to fall off and fail.
(3) The discharge electrode assembly is not provided with a waterproof sealing mechanism, so that nano water ion steam is easy to escape, and great potential safety hazard exists.
The invention provides a discharge electrode assembly which can continuously, stably and safely manufacture nano water ions in a high-humidity environment and is convenient for large-scale industrial production and assembly, and a corresponding nano water ion generating device, namely the invention is disclosed, and can be widely applied to the field of equipment such as beauty treatment, recuperation, atomization, medical treatment and the like.
Disclosure of Invention
The present invention is directed to a method for manufacturing a discharge electrode assembly, which solves the problems of unstable operation of a discharge electrode in a high humidity environment and high manufacturing cost of the discharge electrode.
In order to solve the technical problems, the following technical scheme is adopted:
a method of manufacturing a discharge electrode assembly including a voltage applying portion, a voltage line terminal (6), a package, and a discharge core,
the discharge core is used for manufacturing nano water ions through high-voltage discharge, one end of the discharge core is electrically connected with the voltage applying part, and the other end of the discharge core is a discharge part;
a voltage applying portion, one end of which is electrically connected with the high-voltage power supply and the other end of which is electrically connected with the discharge core;
a wire pressing terminal for clamping the discharge core and the voltage applying part;
a package member for hermetically encapsulating the voltage applying portion in an integral molding, or for hermetically encapsulating the voltage applying portion and the discharge core in an integral molding; or for sealing and encapsulating the voltage applying portion, the discharge core and the line ball terminal in an integral molding manner;
the specific manufacturing method comprises the following steps:
(a) designing an injection mold of the packaging part;
(b) manufacturing a wire pressing terminal and a voltage applying part;
(c) integrally injection molding and packaging the voltage applying part and the packaging part;
(d) intercepting the discharging core bodies with proper length, crimping and sleeving a plurality of discharging core bodies at one end of the voltage applying part close to the discharging part by using a crimping clamp, compressing and sleeving the discharging core bodies tightly, and burning off redundant burrs of the discharging core bodies by using high-temperature fire to ensure that the discharging parts of the discharging core bodies are clean and tidy.
Further, in the step (c), the voltage applying portion and the wire pressing terminal are firstly made into an integrated piece by a stamping method, and then the integrated piece which is stamped by the voltage applying portion and the wire pressing terminal is integrally molded with the package piece for packaging.
Further, the voltage applying portion is provided in a line shape or an L shape.
Further, when the voltage applying part is arranged in a straight line, the voltage applying part is provided with a buckling piece, the voltage applying part and the buckling piece are integrally molded or fixed into a whole in a compression joint mode, and then the voltage applying part and the buckling piece are packaged in the packaging piece together in an injection molding mode.
Further, steps (c) and (d) are replaced by the following fabrication steps:
c) the method comprises the steps of intercepting a discharging core body with a sleeve piece with a proper length, inserting one end of a voltage applying part into the discharging core body with the sleeve piece, enabling the voltage applying part to be in full contact with the discharging core body with the sleeve piece to be electrically connected, sleeving the discharging core body with the sleeve piece by using a line pressing terminal, and pressing and sleeving the discharging core body with the sleeve piece by using a crimping clamp.
d) And (d) positioning a feed inlet on the wire pressing terminal, injecting and feeding materials from the feed inlet according to the injection mold prepared in the step (a), and completing injection molding, thereby manufacturing the discharge electrode assembly.
Further, the sleeve is arranged on the periphery of the discharge core body; the external member is used for carrying out preliminary encapsulation and the support to the core that discharges.
Further, the discharge core is constituted by a fiber molded body; the fiber molded body is composed of a plurality of or bundles of organic or inorganic fibers such as polypropylene resin, graphene, carbon fiber, or metal fiber.
Furthermore, the packaging part is formed by injection molding of corrosion-resistant plastics.
Furthermore, the packaging part is also provided with an inwards concave clamping groove.
Due to the adoption of the technical scheme, the method has the following beneficial effects:
the invention relates to a manufacturing method of a discharge electrode assembly, which is characterized in that a voltage applying part, a discharge core body or a wire pressing terminal and the like are integrally formed with a packaging part by injection molding and the like for sealing and packaging, and meanwhile, a clamping groove, a sealing ring and other waterproof mechanisms are arranged on the packaging part, so that the discharge electrode assembly which is difficult to bend, is sealed and waterproof, is convenient to assemble, and is safe and stable is formed. The discharge core body formed by the fiber forming body can keep safe and stable discharge under extreme environments such as high temperature and high humidity, the voltage applying part and the discharge core body are firmly connected by the wire pressing terminal, so that the high-voltage power supply can be conveniently and electrically connected, and the discharge core body or the voltage applying part is prevented from falling off and losing efficacy by injection molding and packaging of the packaging part. Meanwhile, the manufacturing and assembling process of the discharge electrode assembly which can be industrially produced and the nano water ion generating device are provided.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic view of the structure of a discharge electrode assembly according to a first preferred embodiment of the present invention.
Fig. 2 is a schematic view of a manufacturing and assembling process of a discharge electrode assembly according to a first preferred embodiment of the present invention.
Fig. 3 is a schematic view of the structure and assembly process of a discharge electrode assembly according to a second preferred embodiment of the present invention.
Fig. 4 is a schematic structural view of a discharge electrode assembly according to a third preferred embodiment of the present invention.
Fig. 5 is a schematic view of the structure of a discharge electrode assembly according to a fourth preferred embodiment of the present invention.
Fig. 6 is a schematic view of a manufacturing and assembling process of a discharge electrode assembly according to a fourth preferred embodiment of the present invention.
Fig. 7 is a schematic structural view of a discharge electrode assembly applied to a nano water ion generating device according to an embodiment of the present invention;
fig. 8 is a partial perspective view illustrating an application of a discharge electrode assembly in a nano water ion generating device according to an embodiment of the present invention.
In the figure: 1. voltage applying part, 2, packaging part, 3, discharge core body, 4, clamping groove, 5, kit, 6, line pressing terminal, 10, discharge electrode component, 11, middle electrode, 12, shell, 13, middle electrode fixing part, 14 and fastener.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As in fig. 1 and 2, the first preferred embodiment: a discharge electrode assembly, comprising: the device comprises a voltage applying part (1), a discharge core body (3), a wire pressing terminal (6) and a packaging part (2).
One end of the discharge core body (3) is electrically connected with the voltage applying part (1), and the other end of the discharge core body is a discharge part exposed in the atmosphere outside the packaging part (2). The length of the exposed discharge core body (3) is preferably 0.5-3 mm, and can be adjusted according to requirements.
The discharge core body (3) is a fiber forming body, is composed of a plurality of/bundle of organic or inorganic fibers such as polypropylene resin, graphene, carbon fiber, metal fiber and the like, has the characteristics of porosity, large quantity, good air circulation, good oxidation resistance, stable discharge in a high-temperature and high-humidity environment and the like, and is used for continuously and stably producing nano water ions by high-voltage discharge.
The voltage applying part (1) is in the shape of an L-shaped needle, one end of the voltage applying part is electrically connected with the discharge core body (3), and the other end of the voltage applying part is exposed outside the packaging part (2) and is electrically connected with a high-voltage power supply (not shown in the figure). The voltage applying part (1) is made of a conductor material, such as copper, stainless steel and the like.
The packaging part (2) is formed by injection molding of corrosion-resistant plastics and is used for integrally molding and packaging the L-shaped corner part of the voltage applying part (1) through injection molding, so that the voltage applying part (1) is prevented from being damaged by being pulled out, and a basic framework of the discharge electrode assembly, which is difficult to bend, is sealed and waterproof, is convenient to assemble, and is safe and stable, is formed.
The packaging part (2) is also provided with an inwards concave clamping groove (4), and the waterproof sealing performance of the discharge electrode assembly can be further improved by virtue of waterproof mechanisms (not shown in the figure) such as a sealing ring.
The wire pressing terminal (6) is in a polygonal or round tube shape, the discharging core body (3) is firmly sleeved at one end, close to the discharging part, of the voltage applying part (1) in a wrapping mode through compression joint and other modes, and is compacted and compressed by a compression joint clamp to prevent the discharging core body from falling off. After the crimping, the wire crimping terminal (6) is formed into a substantially circular tube shape or a substantially circular tube shape. One end of the wire pressing terminal (6) close to the packaging piece (2) can be contacted with the packaging piece (2) and can also be separated by a certain gap.
Referring to fig. 2, the method of manufacturing the discharge electrode assembly according to the first preferred embodiment is as follows:
(a) designing an injection mold of the package (2);
(b) manufacturing a wire pressing terminal (6) and an L-shaped (or folded-shaped) voltage applying part (1);
(c) integrally molding and packaging the L-shaped corner part of the voltage applying part (1) and the packaging part (2) by injection molding and other methods;
(d) intercepting a discharging core body (3) with a proper length, taking a plurality of (such as 1K-24K) carbon fiber bundles as an example, crimping and sleeving the carbon fiber bundles at one end, close to a discharging part, of a voltage applying part (1) by using a crimping terminal (6), compressing and sleeving the carbon fiber bundles by using a crimping clamp, and burning off redundant burrs of the carbon fiber bundles by using high-temperature fire to ensure that the discharging part of the discharging core body (3) is clean and tidy.
In the above manufacturing steps, the steps c and d can be interchanged, or the discharge core and the voltage applying part (1) can be well pressed and then integrally injection-molded with the package part (2).
As in fig. 3, the second preferred embodiment: unlike the first preferred embodiment, the voltage applying part (1) and the line-pressing terminal (6) can be made into an integral piece by stamping or the like to ensure that the voltage applying part (1) and the discharge core (3) are electrically connected more firmly.
The other structure is the same as the first preferred embodiment, and the manufacturing method of the discharge electrode assembly is as follows:
(a) designing an injection mold of the package (2);
(b) manufacturing a wire pressing terminal (6) and an L-shaped (or folded-shaped) voltage applying part (1);
(c) the voltage applying part (1) and the wire pressing terminal (6) are manufactured into an integrated piece in a stamping mode, and then the integrated piece formed by stamping the voltage applying part (1) and the wire pressing terminal (6) and the packaging piece (2) are integrally molded and packaged.
(d) Intercepting a discharging core body (3) with a proper length, taking a plurality of (such as 1K-24K) carbon fiber bundles as an example, crimping and sleeving the carbon fiber bundles at one end, close to a discharging part, of a voltage applying part (1) by using a crimping terminal (6), compressing and sleeving the carbon fiber bundles by using a crimping clamp, and burning off redundant burrs of the carbon fiber bundles by using high-temperature fire to ensure that the discharging part of the discharging core body (3) is clean and tidy.
As in fig. 4, the third preferred embodiment: different from the first preferred embodiment and the second preferred embodiment, the voltage applying part (1) is arranged in a straight line, the clamping piece (14) is arranged on the voltage applying part (1), the voltage applying part (1) and the clamping piece (14) can be integrally molded or fixed into a whole in a crimping mode and then are packaged in the packaging part (2) together in an injection molding mode or the like, and the clamping piece (14) can prevent the voltage applying part (1) from being pulled out of the packaging part (2).
The other structures are the same as the first or second preferred embodiment, and the manufacturing method of the discharge electrode assembly is similar to the first and second preferred embodiments.
As shown in fig. 5 and 6, a fourth preferred embodiment of the discharge electrode assembly: wherein, discharge electrode subassembly still includes external member (5), external member (5) are located the periphery of discharge core (3) for carry out preliminary encapsulation to discharge core (3), support discharge core (3), subsequent injection moulding processing of being convenient for also do benefit to discharge core (3) and cut more neatly, efficiency is higher. The other structure is similar to the first or second preferred embodiment.
Referring to fig. 6, a method of manufacturing a discharge electrode assembly according to a fourth preferred embodiment is as follows:
(a) designing an injection mold of the package (2);
(b) manufacturing a wire pressing terminal (6) and an L-shaped (or folded-shaped) voltage applying part (1);
(c) and cutting a discharge core body (3) with a sleeve (5) with a proper length, wherein a plurality of (such as 1K-24K) carbon fiber bundles are taken as an example, and the sleeve (5) is made of silica gel, teflon and other materials. One end of a voltage applying part (1) is inserted into the discharge core body (3) so that the voltage applying part (1) is fully contacted with the carbon fiber bundle to be electrically connected, the discharge core body (3) of the belt sleeve part (5) is sleeved by a wire pressing terminal (6), and the belt sleeve part is tightly pressed and sleeved by a crimping clamp.
(d) And (d) positioning a feed opening on the above-mentioned press terminal (6), injecting the feed material from the feed opening according to the injection mold prepared in step (a), and completing injection molding, thereby manufacturing the discharge electrode assembly.
Optionally, when the discharge electrode assembly is manufactured, other forms of discharge cores, such as porous ceramics, metal needles and the like, can be used.
Optionally, if the sleeve (5) is hard enough to perform injection molding positioning, the wire pressing terminal (6) may not be arranged.
As shown in fig. 7 and 8, the nano water ion generating device using any one of the above discharge electrode assemblies includes: an intermediate electrode 11 made of a porous material (such as carbon fiber, ceramic, etc.) or a metal material (such as platinum, zinc, titanium, etc.) for generating functional nanoparticles or particles, such as nano platinum ions, nano cosmetic liquid particles, nano essential oil aromatherapy particles, etc.; a casing 12 for forming a fluid channel or space, the paired discharge electrode assemblies 10 penetrating through the hole slots on the wall surface of the casing, and being fixedly connected to the hole slots on the casing in a sealing manner through the clamping slots 4 on the package 2 and a waterproof mechanism (not shown in the figure) such as an additional sealing ring, and a high voltage electric field is applied between the paired discharge electrode assemblies 10, and a large amount of nano water ions and functional nano particles are ionized by discharge between the paired discharge electrode assemblies 10 and between the discharge electrode assemblies 10 and the intermediate electrode 11.
Preferably, a sealing ring is arranged in the clamping groove (4), and the sealing ring is made of high-temperature-resistant and corrosion-resistant materials such as silica gel and is used for preventing steam or other fluids in the shell from leaking out of the clamping groove.
Specifically, the test data of the nano water ion generating device using any one of the above discharge electrode assemblies, and the devices described in the references 1 to 2 in the background art are shown in table 1.
TABLE 1 Experimental data sheet of nano water ion generating device of different types of discharge electrode assemblies (ambient temperature 25 deg.C, relative humidity 50%)
From table 1, it can be obtained: under the same conditions, the generation amount of nano water ions of 4 preferred embodiments of the present invention is 33.8% to 218.6% higher than that of the devices described in comparative documents 1 and 2. In addition, in the devices described in documents 1 and 2, the discharge core and the voltage applying portion are not firmly fixed, and the discharge core is easily detached under high temperature, high humidity and high pressure, which results in unstable discharge and even failure. In addition, the discharge electrode assemblies of the devices of reference 1 and reference 2 are not provided with a waterproof sealing mechanism, so that nano water ion steam is easy to escape, and a large potential safety hazard exists.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.
Claims (10)
1. A method of manufacturing a discharge electrode assembly, characterized by: the discharge electrode assembly comprises a voltage applying part (1), a wire pressing terminal (6), a packaging part (2) and a discharge core body (3),
the discharge core body (3) is used for manufacturing nano water ions through high-voltage discharge, one end of the discharge core body is electrically connected with the voltage applying part, and the other end of the discharge core body is a discharge part;
a voltage application unit (1) having one end electrically connected to a high-voltage power supply and the other end electrically connected to the discharge core;
a wire pressing terminal (6) for clamping the discharge core and the voltage applying part;
a package member (2) for hermetically encapsulating the voltage applying portion by integral molding or for hermetically encapsulating the voltage applying portion and the discharge core by integral molding; or for sealing and encapsulating the voltage applying portion, the discharge core and the line ball terminal in an integral molding manner;
the specific manufacturing method comprises the following steps:
(a) designing an injection mold of the package (2);
(b) manufacturing a wire pressing terminal (6) and a voltage applying part (1);
(c) integrally molding and packaging the voltage applying part (1) and the packaging part (2);
(d) intercepting the discharging core bodies (3) with proper length, sleeving a plurality of discharging core bodies (3) at one end of the voltage applying part (1) close to the discharging part by using a crimping terminal (6) in a crimping way, compressing and sleeving the discharging core bodies firmly by using a crimping clamp, and burning off redundant burrs of the discharging core bodies (3) by using high-temperature fire to ensure that the discharging parts of the discharging core bodies (3) are clean and tidy.
2. The method of manufacturing a discharge electrode assembly according to claim 1, wherein: in the step (c), the voltage applying part (1) and the line pressing terminal (6) are firstly manufactured into an integrated piece in a stamping mode, and then the integrated piece formed by stamping the voltage applying part (1) and the line pressing terminal (6) and the packaging piece (2) are integrally injection-molded and packaged.
3. The method of manufacturing a discharge electrode assembly according to claim 1, wherein: the voltage applying part is arranged in a straight line shape or an L shape.
4. A method of manufacturing a discharge electrode assembly according to claim 3, wherein: when the voltage applying part is arranged in a straight line, a clamping piece (14) is arranged on the voltage applying part (1), the voltage applying part (1) and the clamping piece (14) are integrally molded and manufactured or are fixed into a whole in a compression joint mode, and then the voltage applying part (1) and the clamping piece (14) are packaged in a packaging piece (2) together in an injection molding mode.
5. The method of manufacturing a discharge electrode assembly according to claim 1, wherein: said steps (c) and (d) are replaced by the following fabrication steps:
c) intercepting a discharge core body (3) with a proper length and provided with a sleeve piece (5), inserting one end of a voltage applying part (1) into the discharge core body (3) with the sleeve piece (5), enabling the voltage applying part (1) and the discharge core body (3) with the sleeve piece (5) to be fully contacted and electrically connected, sheathing the discharge core body (3) with the sleeve piece (5) by a wire pressing terminal (6), and pressing and sleeving the discharge core body (3) by a crimping clamp.
d) And (c) positioning a feed inlet on the wire pressing terminal (6), injecting and feeding materials from the feed inlet according to the injection mold prepared in the step (a), and completing injection molding, thereby manufacturing the discharge electrode assembly.
6. The method of manufacturing a discharge electrode assembly according to claim 5, wherein: the sleeve (5) is arranged on the periphery of the discharge core body; the external member is used for carrying out preliminary encapsulation to the core that discharges and support the core that discharges.
7. The method of manufacturing a discharge electrode assembly according to any of claims 1 to 6, wherein: the discharge core is composed of a fiber forming body; the fiber molded body is composed of a plurality of/bundle of organic or inorganic fibers.
8. The method of manufacturing a discharge electrode assembly according to any of claims 1 to 6, wherein: the packaging part is formed by injection molding of corrosion-resistant plastics.
9. The method of manufacturing a discharge electrode assembly according to any of claims 1 to 6, wherein: the packaging piece is also provided with an inwards concave clamping groove.
10. A beauty care device having a method of manufacturing the discharge electrode assembly recited in any one of claims 1 to 9.
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| JP2017091760A (en) * | 2015-11-09 | 2017-05-25 | シャープ株式会社 | Ion generator |
| CN107710533A (en) * | 2015-07-10 | 2018-02-16 | 夏普株式会社 | The manufacture method of ion generating device and brush electrode |
| CN108123369A (en) * | 2017-12-19 | 2018-06-05 | 北京众清科技有限公司 | Anion emission end and negative ion emitter |
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2020
- 2020-01-19 CN CN202010060786.1A patent/CN111193193B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203589451U (en) * | 2013-09-28 | 2014-05-07 | 上海育丰电器发展有限公司 | Negative ion emitter and air purifying device having same negative ion emitter |
| CN107710533A (en) * | 2015-07-10 | 2018-02-16 | 夏普株式会社 | The manufacture method of ion generating device and brush electrode |
| JP2017091760A (en) * | 2015-11-09 | 2017-05-25 | シャープ株式会社 | Ion generator |
| CN108123369A (en) * | 2017-12-19 | 2018-06-05 | 北京众清科技有限公司 | Anion emission end and negative ion emitter |
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Effective date of registration: 20211118 Address after: 310000 30009, floor 3, No. 615, binfan street, Xixing street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Guocai Qingke (Hangzhou) Technology Co.,Ltd. Address before: 310019 Room 301, floor 3, building 4, No. 9, Jiuhuan Road, Jianggan District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Qingke Technology Co.,Ltd. |