CN111545534A - Device for cleaning carbon deposition of air inlet manifold - Google Patents
Device for cleaning carbon deposition of air inlet manifold Download PDFInfo
- Publication number
- CN111545534A CN111545534A CN202010419677.4A CN202010419677A CN111545534A CN 111545534 A CN111545534 A CN 111545534A CN 202010419677 A CN202010419677 A CN 202010419677A CN 111545534 A CN111545534 A CN 111545534A
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- China
- Prior art keywords
- base
- handle
- eccentric shaft
- gear
- bevel gear
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/045—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved, e.g. flexible rotating shaft or "snake"
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a device for cleaning carbon deposition of an intake manifold, which comprises a cylindrical base, wherein a handle is fixed at the left end of the base, a cleaning agent storage cavity is formed in the handle, a lead screw is inserted in the cleaning agent storage cavity of the handle, the right end of the lead screw penetrates through the base and is inserted in a concave table of the base, a driven gear is inserted and fixed in a sleeved manner, an eccentric shaft is inserted and connected in the outer ring of the concave table, the eccentric shaft is inserted and connected on the base and is formed with a central hole, a driving gear and a driven bevel gear are inserted and connected in a sleeved manner on the eccentric shaft, the driving gear is meshed with the driven gear, and the; an end cover is fixed to the right end plug bush of the base, a stop block is formed on the inner bottom surface of the end cover and abuts against the right end face of the driven gear, a transmission shaft is inserted into the stop block, one end of the transmission shaft is inserted and fixed into the driving bevel gear, and a handle is fixed to the other end of the transmission shaft after penetrating through the base and the end cover plug bush.
Description
Technical Field
The invention relates to the technical field of engine cleaning equipment, in particular to a device for cleaning carbon deposition of an intake manifold.
Background
The intake manifold, as an important part of an engine intake system, determines not only an initial intake air flow coefficient and intake uniformity of each cylinder, but also a mixing efficiency of natural gas and air and an effective volume ratio. Therefore, the method has important influence on the charge coefficient of the engine and the difference of the working performance of each cylinder, and influences the power torque output, the air-fuel ratio coefficient and the gas consumption rate of the engine. After the intake manifold is used for a long time, the inner wall of the intake manifold is easy to deposit carbon, the poor air intake of an engine can be caused due to the serious carbon deposition, the engine is powerless and shakes in an idling mode, meanwhile, the power is obviously reduced due to the fact that the mixed gas is too thick, and the oil consumption is increased to a certain degree. Therefore, after the engine works for a long time, the engine needs to be cleaned, especially the carbon pile on the inner wall of the intake manifold needs to be removed, the existing carbon pile cleaning mode on the inner wall of the intake manifold is relatively original, the engine is cleaned mainly by manpower, the carbon pile is manually cleaned by matching with cleaning agents such as brushes and the like, and the cleaning work is time-consuming and laborious.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device for cleaning carbon deposits in an intake manifold, which can conveniently and manually clean the carbon deposits in the intake manifold.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a device for cleaning carbon deposition of an air inlet manifold comprises a cylindrical base, wherein a circular concave platform is formed on the right end face of the base, a handle is fixed at the left end of the base, a cleaning agent storage cavity is formed in the handle, a lead screw is inserted in the cleaning agent storage cavity of the handle, the right end of the lead screw penetrates through the base, is inserted in the concave platform of the base and is fixedly sleeved with a driven gear, an eccentric shaft is inserted in the outer ring of the concave platform, the eccentric shaft is inserted in the base and is formed with a central hole, and the central hole of the eccentric shaft is communicated with the cleaning agent storage cavity of the handle; a driving gear and a driven bevel gear are fixed on the eccentric shaft in a sleeved mode, the driving gear is meshed with the driven gear, and the driven bevel gear is meshed with the driving bevel gear; an end cover is fixed on the right end plug bush of the base, a stop block is formed on the bottom surface of the inner side of the end cover and abuts against the end surface of the right side of the driven gear, a transmission shaft is inserted into the stop block, one end of the transmission shaft is inserted and fixed in the driving bevel gear, and a handle is fixed at the other end of the transmission shaft through the base and the end cover plug bush;
the right end of the eccentric shaft penetrates through the end cover plug bush to be fixed with a steel brush roller, and a liquid outlet hole penetrating through the steel brush roller is formed in the inner wall, opposite to the central hole, in the eccentric shaft; the cleaning agent storage cavity of the handle is inserted with a piston disc, the outer wall of the piston disc is abutted against the inner wall of the cleaning agent storage cavity, and the piston disc is screwed on the screw rod.
Preferably, the left end face of the base is formed with a circular external thread boss, the handle is screwed on the external thread boss of the base and is cylindrical, and the central axis of the handle coincides with the central axis of the base.
Preferably, the cleaning agent storage cavity in the handle is circular, the piston disc is circular, and a limiting guide rod is inserted on the piston disc and inserted on the base; the central axis of the screw rod is coincident with the central axis of the handle.
Preferably, the driving gear, the driven bevel gear and the driving bevel gear are inserted into the concave table of the base, and the diameter of the driving gear is smaller than that of the driven gear.
Preferably, the positioning insertion block is formed on the bottom surface of the concave table on the upper side of the driven gear, the positioning groove is formed in the stop block of the end cover, and the positioning insertion block is inserted into the positioning groove.
Preferably, a counter bore is formed in the lower end face of the stop block on the end cover, and the driving bevel gear is inserted into the counter bore.
Preferably, a plurality of liquid outlet holes of the eccentric shaft are inserted with split pins, and two ends of the split pins are inserted on the steel brush roller.
The invention has the beneficial effects that: the manual cleaning device for the strip steel brush head is provided, and the cleaning work of carbon piles accumulated in the air inlet manifold can be conveniently and manually completed.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic top view of the present invention;
fig. 4 is a schematic sectional view at a-a in fig. 3.
In the figure: 1. a base; 1a, a concave platform; 1b, an external thread boss; 1c, positioning an insert block; 2. a handle; 2a, a cleaning agent storage cavity; 2b, a ring groove; 3. a lead screw; 4. an eccentric shaft; 4a, a central hole; 4b, liquid outlet holes; 5. a driving gear; 6. a driven gear; 7. a driven bevel gear; 8. a drive bevel gear; 9. an end cap; 9a, a stop block; 9b, positioning grooves; 9c, counter bores; 10. a drive shaft; 11. c, shaking the hand; 12. a piston disc; 13. a limiting guide rod; 14. a steel brush roller.
Detailed Description
Example (b): as shown in fig. 1 to 4, the device for cleaning carbon deposition of the intake manifold comprises a cylindrical base 1, wherein a circular concave platform 1a is formed on the right end surface of the base 1, a handle 2 is fixed at the left end of the base 1, a cleaning agent storage cavity 2a is formed in the handle 2, a lead screw 3 is inserted in the cleaning agent storage cavity 2a of the handle 2, the right end of the lead screw 3 penetrates through the base 1 and is inserted in the concave platform 1a of the base 1, a driven gear 6 is inserted and sleeved in the concave platform 1a and is fixed with the lead screw, an eccentric shaft 4 is inserted in the outer ring of the concave platform 1a, the eccentric shaft 4 is inserted in the base 1 and is formed with a central hole 4a, and the central hole 4a of the eccentric shaft 4 is communicated; a driving gear 5 and a driven bevel gear 7 are fixedly inserted on the eccentric shaft 4, the driving gear 5 is meshed with the driven gear 6, and the driven bevel gear 7 is meshed with a driving bevel gear 8; an end cover 9 is fixed on the right end plug bush of the base 1, a stop block 9a is formed on the inner bottom surface of the end cover 9, the stop block 9a abuts against the right end face of the driven gear 6, a transmission shaft 10 is inserted into the stop block 9a, one end of the transmission shaft 10 is inserted and fixed into the driving bevel gear 8, and the other end of the transmission shaft 10 penetrates through the base 1 and the end cover 9 plug bush and is fixed with a handle 11;
a steel brush roller 14 is fixedly arranged at the right end of the eccentric shaft 4 through an end cover 9 in an inserting way, and a liquid outlet hole 4b penetrating through the steel brush roller 14 is formed on the inner wall opposite to a central hole 4a in the eccentric shaft 4; a piston disc 12 is inserted in the cleaning agent storage cavity 2a of the handle 2, the outer wall of the piston disc 12 is abutted against the inner wall of the cleaning agent storage cavity 2a, and the piston disc 12 is screwed on the screw rod 3.
The left end face of the base 1 is provided with a circular external thread boss 1b, the handle 2 is screwed on the external thread boss 1b of the base 1, the handle 2 is cylindrical, and the central axis of the handle 2 coincides with the central axis of the base 1.
The cleaning agent storage cavity 2a in the handle 2 is circular, the piston disc 12 is inserted with a limit guide rod 13, and the limit guide rod 13 is inserted on the base 1; the central axis of the screw rod 3 coincides with the central axis of the handle 2.
The driving gear 5, the driven gear 6, the driven bevel gear 7 and the driving bevel gear 8 are all inserted into the concave table 1a of the base 1, and the diameter of the driving gear 5 is smaller than that of the driven gear 6.
A positioning insertion block 1c is formed on the bottom surface of a concave table 1a on the upper side of the driven gear 6, a positioning groove 9b is formed on a stop block 9a of the end cover 9, and the positioning insertion block 1c is inserted into the positioning groove 9 b.
A counter bore 9c is formed in the lower end face of the upper stop block 9a of the end cover 9, and the driving bevel gear 8 is inserted into the counter bore 9 c.
The steel brush roller 14 and the eccentric shaft 4 are fixed in a mode that a plurality of liquid outlet holes 4b of the eccentric shaft 4 are internally inserted with split pins, and two ends of each split pin are inserted into the steel brush roller 14.
An annular groove 2b communicated with a central hole 4a in the eccentric shaft 4 is formed on the inner wall of the cleaning agent storage cavity 2a of the handle 2 close to the base 1.
The working principle is as follows: the invention is a device for cleaning carbon deposition in an intake manifold, the device can open a handle 2, a cleaning agent is added into a cleaning agent storage cavity 2a of the handle 2, then the handle 2 is fixed, the handle 2 is held by one hand, a hand crank 11 is held by the other hand, the hand crank 11 is driven to rotate, the hand crank 11 can realize the rotation of a driving bevel gear 8, further the rotation of an eccentric shaft 4 is realized, a steel brush roller 14 at the right end of the eccentric shaft 4 can extend into the intake manifold to clean the inner wall of the intake manifold, meanwhile, the eccentric shaft 4 can drive a lead screw 3 to rotate through rotation, the lead screw 3 can drive a piston disc 12 to move towards a base 1, further, the piston disc 12 presses the cleaning agent in the cleaning agent storage cavity 2a into the eccentric shaft 4 to be sprayed out of the steel brush roller 14, the steel brush roller 14 can be continuously;
when no cleaning agent exists, the handle 2 can be taken down, the limiting guide rod 13 is pulled down, the piston disc 12 is rotated, the piston disc 12 is moved to the left end of the screw rod 3, then the limiting guide rod 13 is inserted, and after the piston disc 12 is inserted into the handle 2, the cleaning agent is added.
The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.
Claims (7)
1. The utility model provides a device of clearance intake manifold carbon deposit, includes columniform base (1), and the shaping has circular shape concave station (1a) on the right-hand member face of base (1), and the left end of base (1) is fixed with handle (2), its characterized in that: a cleaning agent storage cavity (2a) is formed in the handle (2), a lead screw (3) is inserted in the cleaning agent storage cavity (2a) of the handle (2), the right end of the lead screw (3) penetrates through the base (1) and is inserted in the concave table (1a) of the base (1), a driven gear (6) is inserted and fixed in a sleeved mode, an eccentric shaft (4) is inserted in the outer ring of the concave table (1a), the eccentric shaft (4) is inserted in the base (1) and is formed with a central hole (4a), and the central hole (4a) of the eccentric shaft (4) is communicated with the cleaning agent storage cavity (2a) of the handle (2); a driving gear (5) and a driven bevel gear (7) are fixedly inserted on the eccentric shaft (4), the driving gear (5) is meshed with the driven gear (6), and the driven bevel gear (7) is meshed with the driving bevel gear (8); an end cover (9) is fixed to the right end of the base (1) in an inserting sleeve mode, a stop block (9a) is formed on the bottom face of the inner side of the end cover (9), the stop block (9a) abuts against the end face of the right side of the driven gear (6), a transmission shaft (10) is inserted into the stop block (9a), one end of the transmission shaft (10) is inserted and fixed into the driving bevel gear (8), and the other end of the transmission shaft (10) penetrates through the base (1) and the end cover (9) in an inserting sleeve mode and is fixed with a hand crank (11);
a steel brush roller (14) is fixedly arranged at the right end of the eccentric shaft (4) through an end cover (9) and an inserting sleeve, and a liquid outlet hole (4b) penetrating through the steel brush roller (14) is formed in the inner wall of the eccentric shaft (4) opposite to the central hole (4 a); a piston disc (12) is inserted in the cleaning agent storage cavity (2a) of the handle (2), the outer wall of the piston disc (12) is abutted against the inner wall of the cleaning agent storage cavity (2a), and the piston disc (12) is screwed on the screw rod (3).
2. The device for cleaning carbon deposition of the intake manifold as recited in claim 1, wherein: the left end face of the base (1) is formed with a circular external thread boss (1b), the handle (2) is in threaded connection with the external thread boss (1b) of the base (1), the handle (2) is cylindrical, and the central axis of the handle (2) coincides with the central axis of the base (1).
3. The device for cleaning carbon deposition of the intake manifold as recited in claim 2, wherein: the cleaning agent storage cavity (2a) in the handle (2) is circular, the piston disc (12) is circular, a limiting guide rod (13) is inserted on the piston disc (12), and the limiting guide rod (13) is inserted on the base (1); the central axis of the screw rod (3) is coincident with the central axis of the handle (2).
4. The device for cleaning carbon deposition of the intake manifold as recited in claim 1, wherein: the driving gear (5), the driven gear (6), the driven bevel gear (7) and the driving bevel gear (8) are inserted into the concave table (1a) of the base (1), and the diameter of the driving gear (5) is smaller than that of the driven gear (6).
5. The device for cleaning carbon deposition of the intake manifold as recited in claim 4, wherein: a positioning insertion block (1c) is formed on the bottom surface of a concave table (1a) on the upper side of the driven gear (6), a positioning groove (9b) is formed on a stop block (9a) of the end cover (9), and the positioning insertion block (1c) is inserted into the positioning groove (9 b).
6. The device for cleaning carbon deposition of the intake manifold as recited in claim 5, wherein: and a counter bore (9c) is formed in the lower end face of the upper stop block (9a) of the end cover (9), and the drive bevel gear (8) is inserted in the counter bore (9 c).
7. The device for cleaning carbon deposition of the intake manifold as recited in claim 6, wherein: and split pins are inserted into the liquid outlet holes (4b) of the eccentric shaft (4), and two ends of each split pin are inserted into the steel brush rolls (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419677.4A CN111545534B (en) | 2020-05-18 | 2020-05-18 | Device for cleaning carbon deposition of air inlet manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419677.4A CN111545534B (en) | 2020-05-18 | 2020-05-18 | Device for cleaning carbon deposition of air inlet manifold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111545534A true CN111545534A (en) | 2020-08-18 |
| CN111545534B CN111545534B (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010419677.4A Active CN111545534B (en) | 2020-05-18 | 2020-05-18 | Device for cleaning carbon deposition of air inlet manifold |
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| Country | Link |
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| CN (1) | CN111545534B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431672A (en) * | 2020-12-31 | 2021-03-02 | 潍柴动力扬州柴油机有限责任公司 | Cleaning device for cleaning oil sprayer hole |
| CN114951089A (en) * | 2022-06-30 | 2022-08-30 | 中国人民解放军陆军军医大学第一附属医院 | Dual-purpose cleaner for scraping and brushing medical instruments |
| CN115504157A (en) * | 2022-11-04 | 2022-12-23 | 济南凯瑞特铸造有限公司 | Engine casting intake manifold clearance transfer chain |
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| GB191508306A (en) * | 1915-06-04 | 1915-12-09 | William Burlingham | An Improved Percussive Boiler Tube Cleaner. |
| US20030070694A1 (en) * | 2001-10-16 | 2003-04-17 | Mccleary Daniel | Method and apparatus for online and offline cleaning of industrial systems |
| CN103521488A (en) * | 2013-10-16 | 2014-01-22 | 长安大学 | Brinell rotational viscometer material containing cylinder cleaning device and use method thereof |
| CN204208864U (en) * | 2014-11-03 | 2015-03-18 | 黑龙江工业学院 | Portable test-tube cleaner |
| CN107537831A (en) * | 2017-09-30 | 2018-01-05 | 赵卫祥 | High-efficiency washing device inside a kind of petroleum pipeline |
| CN109201555A (en) * | 2018-09-07 | 2019-01-15 | 谢森涛 | A kind of mechanical equipment cleaning oil pollution device |
| CN209049847U (en) * | 2018-09-20 | 2019-07-02 | 广东电网有限责任公司 | Handheld steel anchor tube cleaner for inner wall |
| CN110479663A (en) * | 2019-08-16 | 2019-11-22 | 安徽省恒昌刷业有限公司 | A kind of electric industry brush with cleaning function |
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2020
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191508306A (en) * | 1915-06-04 | 1915-12-09 | William Burlingham | An Improved Percussive Boiler Tube Cleaner. |
| US20030070694A1 (en) * | 2001-10-16 | 2003-04-17 | Mccleary Daniel | Method and apparatus for online and offline cleaning of industrial systems |
| CN103521488A (en) * | 2013-10-16 | 2014-01-22 | 长安大学 | Brinell rotational viscometer material containing cylinder cleaning device and use method thereof |
| CN204208864U (en) * | 2014-11-03 | 2015-03-18 | 黑龙江工业学院 | Portable test-tube cleaner |
| CN107537831A (en) * | 2017-09-30 | 2018-01-05 | 赵卫祥 | High-efficiency washing device inside a kind of petroleum pipeline |
| CN109201555A (en) * | 2018-09-07 | 2019-01-15 | 谢森涛 | A kind of mechanical equipment cleaning oil pollution device |
| CN209049847U (en) * | 2018-09-20 | 2019-07-02 | 广东电网有限责任公司 | Handheld steel anchor tube cleaner for inner wall |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431672A (en) * | 2020-12-31 | 2021-03-02 | 潍柴动力扬州柴油机有限责任公司 | Cleaning device for cleaning oil sprayer hole |
| CN114951089A (en) * | 2022-06-30 | 2022-08-30 | 中国人民解放军陆军军医大学第一附属医院 | Dual-purpose cleaner for scraping and brushing medical instruments |
| CN114951089B (en) * | 2022-06-30 | 2024-03-08 | 中国人民解放军陆军军医大学第一附属医院 | Dual-purpose cleaner of medical instrument scraping brush |
| CN115504157A (en) * | 2022-11-04 | 2022-12-23 | 济南凯瑞特铸造有限公司 | Engine casting intake manifold clearance transfer chain |
| CN115504157B (en) * | 2022-11-04 | 2023-02-03 | 济南凯瑞特铸造有限公司 | Engine casting intake manifold clearance transfer chain |
Also Published As
| Publication number | Publication date |
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| CN111545534B (en) | 2021-08-31 |
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Effective date of registration: 20210805 Address after: No.1469, Fengnan East Road, Jiaojiang District, Taizhou City, Zhejiang Province Applicant after: ZHEJIANG BOYI TECHNOLOGY Co.,Ltd. Address before: No.12, Ximen Road, Jiaojiang District, Taizhou City, Zhejiang Province Applicant before: Zhong Jianbin |
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