CN104158030B - The energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat - Google Patents
The energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat Download PDFInfo
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- CN104158030B CN104158030B CN201410350979.5A CN201410350979A CN104158030B CN 104158030 B CN104158030 B CN 104158030B CN 201410350979 A CN201410350979 A CN 201410350979A CN 104158030 B CN104158030 B CN 104158030B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 98
- 230000004224 protection Effects 0.000 title claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims abstract description 27
- 230000006378 damage Effects 0.000 claims abstract description 7
- 229910052754 neon Inorganic materials 0.000 claims description 36
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 36
- 230000005611 electricity Effects 0.000 claims description 15
- 101150117721 Cht2 gene Proteins 0.000 claims description 7
- 101100113376 Oryza sativa subsp. japonica Cht8 gene Proteins 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 101150057480 Cht3 gene Proteins 0.000 claims description 4
- 101100383684 Drosophila melanogaster Cht10 gene Proteins 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000006837 decompression Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The energy-saving protection off zero of capacitor step-down of the present invention and ground connection general-purpose self-checking plug seat,Protection off zero is that a capacitor is bridged on the zero line and ground wire of single-phase tripolar plug or single-phase three pole socket,Capacitor is controlled by selecting switch,When, which there is zero line, in externally fed circuit to be disconnected or ride on live wire,When the electric current being connected on the capacitor between zero line and ground wire rises to a certain numerical value,User's earth leakage protective device can trip immediately,The electrical equipment for being effectively protected user exempts from damage,Ground connection general-purpose self-checking plug seat is that protective seletion switch off zero and safe self-test indicator lamp and experiment are installed on single-phase tripolar plug or single-phase three pole socket An Button,If it is indicated that lamp SD2 and indicator lamp SD3 while bright explanation live wire L1 position are correct,Otherwise Miswire waits to fix a breakdown and use again,Circuit of the present invention is simple,Cost is low,The advantages of easy to operate,It is very with practical value.
Description
Technical field
The present invention relates to the safe power supply of low-voltage power supply system, safety utilization of electric power, earthing detection and protection field off zero, especially
It is the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat.
Background technology
Phenomenon off zero be present in electric power system, the zero line of particularly residential quarter three-phase and four-line power supply breaks suddenly, three-phase fire
Part family voltage is will result in when linear load is seriously uneven to be suddenly increased to be even up to 400V or so more than 250V, or
Zero line, which breaks, to fall on a certain phase firewire, will result in a large amount of household electrical appliance and is burned out, and similar accident once occurs, there is presently no
It is effectively protected measure；Current each urban and rural housing or industrial and mining enterprises all use substantial amounts of single-phase tripolar plug seat, some families or
Enterprise security consciousness is not strong, and house decoration and new equipment installation unearthed line or ground wire do not meet safety requirements, are directed at final calamity
Into the big Woe of personal injury, how to find to detect the potential safety hazard of electrical equipment, lack simple and effective means and method at present.Example
Such as simplest 220 volts single-phase three pole sockets, because existing socket is that protection against electric shock jack gap is small and baffle plate, voltage test pencil are housed
Or universal meter indicator is not easy to inject, the problem of ground wire is present, a kind of anxious easy ground connection general-purpose self-test of palpus can not be intuitively confirmed
Connector assembly judges the reliability of the security of electrical equipment and earth system, to eliminate safe hidden trouble, prevents the generation of accident.
The content of the invention
The purpose of the present invention is to be directed to drawbacks described above, there is provided one kind have it is off zero protection, meet safety requirements, operation letter
Just, the energy-saving protection off zero of capacitor step-down for judging single-phase three pole sockets security performance and ground connection general-purpose self-checking plug can be detected
Seat.Protective seletion switch off zero and safe self-test indicator lamp are installed on single-phase tripolar plug or single-phase three pole socket and experiment is pressed
Button, single-phase tripolar plug insertion single-phase three pole socket of user, when, which there is zero line, in externally fed circuit to be disconnected or ride on live wire,
Due to three phase supply power source loads difference three-phase voltage disequilibrium, voltage may increase between the zero line N and safety line E of user
Add, when being connected across the electric current of capacitor between zero line N and safety line E and rising to a certain numerical value, the earth leakage protective of user can be stood
Trip, the electrical equipment for being effectively protected user exempts from damage, when single-phase three pole of single-phase tripolar plug CHT2 insertion users
In socket, if it is indicated that lamp D2 and indicator lamp D3 while bright explanation live wire L2 position are correct, test button SB4 is without anti-for pressure
Should, single-phase three pole socket of user's earth leakage protective device tripping operation explanation user is safe and reliable after pressure test button SB3, otherwise
There is Miswire to wait to fix a breakdown and use again.
The technical scheme is that the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat, its feature
It is that protective seletion switch off zero and safe self-test indicator lamp and experiment are installed on single-phase tripolar plug seat extremely to insert An Button, single-phase three
Head insertion single-phase three pole socket of user, when zero line, which occurs, in externally fed circuit to be disconnected or ride on live wire, due to three phase supply
Power source loads difference three-phase voltage disequilibrium, voltage may increase between the zero line N and safety line E of user, be connected across zero
When the electric current of capacitor rises to a certain numerical value between line N and safety line E, the earth leakage protective of user can trip immediately, effectively
The electrical equipment of protection user exempt from damage, particular circuit configurations are pacified in single-phase tripolar plug or single-phase three pole sockets CHT2
Full ground wire E2 connects diode D1 positive pole, diode D2 positive pole, the negative pole of LED 1, light emitting diode simultaneously
LED2 negative poles, protective seletion off zero switch K2 and test button SB3, diode D1 negative poles connecting luminous diode LED1 positive poles and
Capacitor C1, the protective seletion switch K2 other ends off zero connect capacitor C2, the capacitor C1 other ends and the capacitor C2 other ends
Zero line N2, diode D2 negative poles connecting luminous diode LED2 positive poles and capacitor C3, the test button SB3 other ends are connected together
Capacitor C4 is connected, the capacitor C3 other ends and the capacitor C4 other ends connect live wire L2, zero line N2 connection diodes D3 together
Positive pole, the negative pole of LED 3 and test button SB4, diode D3 negative poles connecting luminous diode LED3 positive poles and electricity
Container C5, test button the SB4 other end connect capacitor C6, and the capacitor C5 other ends and the capacitor C6 other ends connect fire together
Line L2, selection and current related, the electric current 2 of light emitting diode on state of by light emitting diode and diode of condenser capacity
To 3 milliamperes, more than 90% can be economized on electricity using the decompression of capacitor step-down ratio resistance, although needing to be more than by the electric current of test button
30 milliamperes, there is no voltage between safety line and zero line during normal power supply or have atomic voltage.
The energy-saving protection off zero of the capacitor step-down and ground connection general-purpose self-checking plug seat, including neon bulb, it is characterised in that
The induced electricity of microampere order using neon bulb, particular circuit configurations be in single-phase tripolar plug or single-phase three pole sockets CHT3 safely
Line E3 connects protective seletion switch K3, test button SB5, neon bulb FN1 and the connection of neon bulb FN2, neon bulb the FN1 other end off zero simultaneously
Capacitor C7, the protective seletion switch K3 other ends off zero connect capacitor C8, the capacitor C7 other ends and the capacitor C8 other ends
Zero line N3, neon bulb FN2 other ends connection capacitor C9, test button SB5 other ends connection capacitor C10, electric capacity are connected together
The device C9 other ends and the capacitor C10 other ends connect live wire L3, zero line N3 joint test button SB6 and neon bulb FN3, neon bulb together
The FN3 other ends connect capacitor C11, test button SB6 other ends connection capacitor C12, the capacitor C11 other ends and capacitor
The C12 other ends connect live wire L3 together, and neon bulb on state of electric current only has tens microamperes, is similar to induced electricity, and power consumption is also similar to zero.
The energy-saving protection off zero of capacitor step-down of the present invention and ground connection general-purpose self-checking plug seat tool have protection off zero,
Phenomenon off zero be present in electric power system, the zero line of particularly residential quarter three-phase and four-line power supply breaks suddenly, and three-phase firewire load is tight
Weight will result in part family voltage when uneven and be suddenly increased to be even up to 400V or so more than 250V, or zero line breaks
On a certain phase firewire, it will result in a large amount of household electrical appliance and be burned out, once occurring, protector off zero can avoid for similar accident
The phenomenon that electrical appliance is burned out；With the correct connection to safety ground, to power supply, electricity consumption, the commercial house, residential quarters, independence
The single-phase three pole sockets safety ground of the user such as the safety ground of resident family etc. and electrical equipment is detected, it is ensured that safety utilization of electric power.
The advantages of circuit of the present invention is simple, cost is low, easy to operate, it is very with practical value.
Brief description of the drawings
The energy-saving protection off zero of Fig. 1 capacitor step-downs and general-purpose self-checking plug seat circuit theory diagrams
The energy-saving protection off zero of Fig. 2 neon bulb capacitor step-downs and general-purpose self-checking plug seat circuit theory diagrams
Fig. 3 protections off zero and ground connection general-purpose self-checking plug outline plan schematic diagram
L2 live wires, N2 zero lines, E2 safety lines, CHT2 single-phase tripolar plugs or single-phase three pole socket, K2 guarantors off zero in Fig. 1
Protect selecting switch, SB3-SB4 test buttons, LED1-LED3 light emitting diodes, D1-D2 diodes, C1-C6 capacitors.
L3 live wires, N3 zero lines, E3 safety lines, CHT3 single-phase tripolar plugs or single-phase three pole socket, K3 guarantors off zero in Fig. 2
Protect selecting switch, SB5-SB6 test buttons, FN1-FN3 neon bulbs, C7-C12 capacitors.
L live wires, N zero lines, E safety lines, CH single-phase tripolar plugs, K protective seletion switch off zero, SB experiments are pressed in Fig. 3
Button, SD indicator lamps.
Embodiment
Fig. 1 be capacitor step-down it is energy-saving it is off zero protection and general-purpose self-checking plug seat circuit theory diagrams, capacitor step-down section
The protection off zero of energy type and general-purpose self-checking plug seat are that capacitance decompression can economize on electricity, and operation principle is：Protection off zero is and user's power supply
Earth leakage protective device coordinates composition to be to install protective seletion switch off zero and safety on single-phase tripolar plug or single-phase three pole socket
Button is pressed in self-test indicator lamp and experiment, and zero line N2 and safety are connected across equivalent to capacitor C2 when protective seletion switch K2 off zero is connected
Between ground wire E2, single-phase tripolar plug CHT2 insertion single-phase three pole socket of user, when externally fed circuit occur zero line disconnect or
When riding on live wire, due to three phase supply power source loads difference three-phase voltage disequilibrium, the zero line N2 and safety line of user
Voltage may increase between E2, and the electric current for being connected across capacitor C2 between zero line N2 and safety line E2 rises to a certain numerical value
When, the electric current on zero line N2 is more than the electric current on live wire L2, occurs in the ZCT of the earth leakage protective device of user uneven
Weighing apparatus, the earth leakage protective of user can trip immediately, and the electrical equipment for being effectively protected user exempts from damage, safety line E2 and live wire
Self-test indicator lamp light-emitting diodes are installed respectively between L2 between safety ground E2 and zero line N2 between live wire L2 and zero line N2
Pipe and test button, judge safety line E2 and zero line N2 and live wire L2 with dark according to indicator lamp is bright each whether position be correct,
Further confirmed that again by test button, when single-phase tripolar plug CHT2 insertion user single-phase three pole socket in, if it is indicated that
Lamp light emitting diode ELD2 and light emitting diode ELD3 bright explanation live wire L2 simultaneously position is correct, pressure test button SB4 without
React, single-phase three pole socket of user's earth leakage protective tripping operation explanation user is safe and reliable after pressure test button SB3, otherwise
There is Miswire to wait to fix a breakdown and use again, the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat are electric capacity drops
Pressure can economize on electricity.Embodiment is safety line E2 while two poles of connection in single-phase tripolar plug or single-phase three pole sockets CHT2
Pipe D1 positive pole, diode D2 positive pole, the negative pole of LED 1, the negative pole of LED 2, protective seletion off zero
Switch K2 and test button SB3, diode D1 negative poles connecting luminous diode LED1 positive poles and capacitor C1, protective seletion off zero
K2 other ends connection capacitor C2 is switched, the capacitor C1 other ends and the capacitor C2 other ends connect zero line N2, diode together
D2 negative poles connecting luminous diode LED2 positive poles and capacitor C3, the connection of the test button SB3 other ends capacitor C4, capacitor C3
The other end and the capacitor C4 other ends connect live wire L2, zero line N2 connection diodes D3 positive pole, LED 3 together
Negative pole and test button SB4, diode D3 negative poles connecting luminous diode LED3 positive poles and capacitor C5, test button SB4 are another
One end connects capacitor C6, and the capacitor C5 other ends and the capacitor C6 other ends connect live wire L2 together.Explanation：Condenser capacity
Selection with by the current related of light emitting diode and diode, 2 to 3 milliamperes of the electric current of light emitting diode on state of, using electricity
Container decompression ratio resistance decompression can economize on electricity more than 90%, although need to be more than 30 milliamperes by the electric current of test button, normal to supply
There is no voltage when electric between safety line and zero line or have atomic voltage.
Fig. 2 be neon bulb capacitor step-down it is energy-saving it is off zero protection and general-purpose self-checking plug seat circuit theory diagrams, operation principle
It is identical with Fig. 1, open selecting switch K3, when outside three phase supply power source loads difference three-phase voltage disequilibrium, user's
Voltage may increase between zero line N3 and safety line E3, be connected across the electric current of capacitor C8 between zero line N3 and safety line E3
When rising to a certain numerical value, the electric current on zero line N3 (zero line N) is more than the electric current on live wire L3 (live wire L), leaks electricity and protects in user
Protect and occur imbalance in the ZCT of device, the earth leakage protective of user can be tripped immediately, and the electricity consumption for being effectively protected user is set
It is standby to exempt from damage.Between safety line E3 and live wire L3 between safety ground E3 and zero line N3 between live wire L3 and zero line N3
Self-test indicator lamp neon bulb and test button are installed respectively, neon bulb FN2 and neon bulb FN3 is simultaneously bright when normal, illustrates live wire L3 positions
It is correct, as neon bulb FN1 and neon bulb FN3 is simultaneously bright, illustrate live wire L3 positional faults, need to be by live wire L3 and zero line N3 position
Exchanged and can be used.Neon bulb in the energy-saving protection off zero of neon bulb capacitor step-down and ground connection general-purpose self-checking plug seat is similar
Voltage test pencil neon tube, is the induced electricity of microampere order, and particular circuit configurations are pacified in single-phase tripolar plug or single-phase three pole sockets CHT3
Full ground wire E3 connects protective seletion switch K3, test button SB5, neon bulb FN1 and neon bulb FN2 off zero, the neon bulb FN1 other ends simultaneously
Capacitor C7 is connected, protective seletion switch K3 other ends connection capacitor C8 off zero, the capacitor C7 other ends and capacitor C8 are another
One end connects zero line N3, neon bulb FN2 other ends connection capacitor C9, test button SB5 other ends connection capacitor C10 together,
The capacitor C9 other ends and the capacitor C10 other ends connect live wire L3, zero line N3 joint test button SB6 and neon bulb FN3 together,
The neon bulb FN3 other ends connect capacitor C11, test button SB6 other ends connection capacitor C12, the capacitor C11 other ends and electricity
The container C12 other ends connect live wire L3 together.Explanation：Neon bulb on state of electric current only has tens microamperes, is similar to induced electricity, power consumption
It is similar to zero.
Fig. 3 is protection off zero and ground connection general-purpose self-checking plug outline plan schematic diagram, is provided with capacitor step-down inside it
Energy-saving protection off zero and the energy-saving protection off zero of ground connection general-purpose self-checking plug seat circuit or neon bulb capacitor step-down and ground connection ten thousand
With self-checking plug seat circuit.
Claims (2)
1. the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat, it is characterized in that on single-phase tripolar plug seat
Protective seletion switch and safe self-test indicator lamp and test button off zero are installed, single-phase tripolar plug insertion user single-phase three extremely inserts
Seat, when zero line, which occurs, in externally fed circuit to be disconnected or ride on live wire, due to three phase supply power source loads difference three-phase voltage
Disequilibrium, voltage may increase between the zero line N and safety line E of user, be connected across between zero line N and safety line E electric
When the electric current of container rises to a certain numerical value, the earth leakage protective of user can trip immediately, be effectively protected the electrical equipment of user
Exempt from damage, circuit structure is safety line E2 while to connect diode D1 positive pole, diode in single-phase tripolar plug CHT2
D2 positive pole, the negative pole of LED 1, the negative pole of LED 2, protective seletion off zero switch K2 and test button
SB3, diode D1 negative poles connecting luminous diode LED1 positive poles and capacitor C1, protective seletion switch K2 other end connections off zero
Capacitor C2, the capacitor C1 other ends and the capacitor C2 other ends connect zero line N2, diode D2 negative poles connection luminous two together
Pole pipe LED2 positive poles and capacitor C3, test button SB3 other ends connection capacitor C4, the capacitor C3 other ends and capacitor C4
The other end connects live wire L2, zero line N2 connection diodes D3 positive pole, the negative pole of LED 3 and test button together
SB4, diode D3 negative poles connecting luminous diode LED3 positive poles and capacitor C5, test button the SB4 other end connection capacitor
C6, the capacitor C5 other ends and the capacitor C6 other ends connect live wire L2 together, and the selection of condenser capacity is with passing through luminous two
Current related, 2 to 3 milliamperes of the electric current of light emitting diode on state of of pole pipe and diode, needed by the electric current of test button big
In 30 milliamperes.
2. the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat, including neon bulb, it is characterised in that using neon
Bubble is the induced electricity of microampere order, and particular circuit configurations are safety line E3 while to connect protection off zero in single-phase tripolar plug CHT3
Selecting switch K3, test button SB5, neon bulb FN1 and neon bulb FN2, neon bulb FN1 other ends connection capacitor C7, protection choosing off zero
Switch K3 other end connection capacitor C8 are selected, the capacitor C7 other ends and the capacitor C8 other ends connect zero line N3, neon bulb together
The FN2 other ends connect capacitor C9, test button SB5 other ends connection capacitor C10, the capacitor C9 other ends and capacitor
The C10 other ends connect live wire L3, zero line N3 joint test button SB6 and neon bulb FN3, neon bulb FN3 other ends connection electric capacity together
Device C11, test button the SB6 other end connect capacitor C12, and the capacitor C11 other ends and the capacitor C12 other ends connect together
Live wire L3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350979.5A CN104158030B (en) | 2013-05-16 | 2013-05-16 | The energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350979.5A CN104158030B (en) | 2013-05-16 | 2013-05-16 | The energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat |
| CN201310202617.7A CN103296541B (en) | 2013-05-16 | 2013-05-16 | Protection off zero and ground connection general-purpose self-checking plug seat |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310202617.7A Division CN103296541B (en) | 2013-05-16 | 2013-05-16 | Protection off zero and ground connection general-purpose self-checking plug seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104158030A CN104158030A (en) | 2014-11-19 |
| CN104158030B true CN104158030B (en) | 2017-12-12 |
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| CN201410350979.5A Active CN104158030B (en) | 2013-05-16 | 2013-05-16 | The energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat |
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| CN114937345A (en) * | 2021-06-18 | 2022-08-23 | 天一智能科技(无锡)有限公司 | Fling-cut switch with data acquisition and control functions |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2409659Y (en) * | 1999-10-28 | 2000-12-06 | 汤健 | Electrical safety experiment case for single-phase three-hole planar electrode socket and electric leakage protector |
| JP3312172B2 (en) * | 1998-12-03 | 2002-08-05 | 中国電力株式会社 | Distribution line ground fault protection relay test method and apparatus |
| CN202563045U (en) * | 2012-05-28 | 2012-11-28 | 李宗跃 | Right-or-wrong judgment display for wiring of indoor single-phase three-hole socket |
| CN203813141U (en) * | 2013-05-16 | 2014-09-03 | 介国安 | Capacitor step-down energy-saving faulted neutral line protection and grounding universal self-checking connector assembly |
-
2013
- 2013-05-16 CN CN201410350979.5A patent/CN104158030B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3312172B2 (en) * | 1998-12-03 | 2002-08-05 | 中国電力株式会社 | Distribution line ground fault protection relay test method and apparatus |
| CN2409659Y (en) * | 1999-10-28 | 2000-12-06 | 汤健 | Electrical safety experiment case for single-phase three-hole planar electrode socket and electric leakage protector |
| CN202563045U (en) * | 2012-05-28 | 2012-11-28 | 李宗跃 | Right-or-wrong judgment display for wiring of indoor single-phase three-hole socket |
| CN203813141U (en) * | 2013-05-16 | 2014-09-03 | 介国安 | Capacitor step-down energy-saving faulted neutral line protection and grounding universal self-checking connector assembly |
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| CN104158030A (en) | 2014-11-19 |
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Address after: 325200 Ruian City, south of the Yangtze River in the city of riverside Street standard factory building light industrial zone, the first floor of the ninth floor of the first floor of the Thai Electrical Appliance Co., Ltd., four Applicant after: Jie Guoan Address before: 325207 Zhejiang province Ruian City Feiyun Town Yun Zhou Industrial Zone Thai Electric Appliance Co. Ltd Applicant before: Jie Guoan |
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Effective date of registration: 20200615 Address after: 518109 Xingyue Building, Shichang Road, Gaofeng Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province 228 Patentee after: Tang Zhijian Address before: 325200, Zhejiang, Ruian Province on the south side of the street, Jiang River standard factory building, light industrial zone ninth East first four floor Tai Tai Electrical Appliance Co., Ltd. Patentee before: Jie Guoan |
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Effective date of registration: 20201228 Address after: 233399, 4 floor, building 3, industrial Acceleration Center, Wuhe County Economic Development Zone, Bengbu, Anhui. Patentee after: WUHE ZHIKAI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Patentee after: Zeng Yuee Address before: 518109 Xingyue Building, Shichang Road, Gaofeng Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province 228 Patentee before: Tang Zhijian |
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Effective date of registration: 20210913 Address after: 273300 No.207, East Second floor, Administration Committee of Shandong Pingyi Economic Development Zone, west section of Jinhua Road, Pingyi Economic Development Zone, Linyi City, Shandong Province Patentee after: Pingyi Economic Development Zone Investment Development Co.,Ltd. Address before: 233399, 4 floor, building 3, industrial Acceleration Center, Wuhe County Economic Development Zone, Bengbu, Anhui. Patentee before: WUHE ZHIKAI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Patentee before: Zeng Yuee |