CN110247201A - It is a kind of for preventing the connecting terminal of toner screw - Google Patents
It is a kind of for preventing the connecting terminal of toner screw Download PDFInfo
- Publication number
- CN110247201A CN110247201A CN201910540627.9A CN201910540627A CN110247201A CN 110247201 A CN110247201 A CN 110247201A CN 201910540627 A CN201910540627 A CN 201910540627A CN 110247201 A CN110247201 A CN 110247201A
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- Prior art keywords
- terminal
- screw
- fixing grooves
- tabletting
- preventing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000712 assembly Effects 0.000 claims abstract description 38
- 238000000429 assembly Methods 0.000 claims abstract description 38
- 238000010079 rubber tapping Methods 0.000 claims abstract description 27
- 206010058109 Hangnail Diseases 0.000 claims description 8
- 238000002788 crimping Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 4
- 239000007789 gas Substances 0.000 description 11
- 239000000523 sample Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000011900 installation process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/34—Conductive members located under head of screw
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
The invention discloses a kind of for preventing the connecting terminal of toner screw, it is related to electrical fitting technical field, wherein, above-mentioned connecting terminal includes: firm banking, terminal tabletting and screw assemblies, terminal fixing grooves are provided on above-mentioned firm banking, the opening of terminal fixing grooves is towards the center of firm banking, terminal tabletting is detachably connected with terminal fixing grooves, the cavity for accommodating screw assemblies is formed between terminal tabletting and terminal fixing grooves, above-mentioned terminal tabletting includes top plate, flange tapping hole is provided on top plate, screw assemblies are connect by flange tapping hole with terminal tabletting, terminal tabletting carries out lower limit position limit to the stroke of screw assemblies, compared with prior art, screw assemblies will not fall off during wiring, to make work progress more Portable safety.
Description
Technical field
The present invention relates to electrical fitting technical fields, and in particular to a kind of for preventing the connecting terminal of toner screw.
Background technique
Combustible gas probe is the detector responded to single or many combustible gases concentration.Common is flammable
Gas detector has two kinds of catalytic type, infrared optics type.In use, combustible gas probe by scene fuel gas
Concentration is converted to electric signal, and later, which is sent in the monitoring device of safety zone, can to reach monitoring field
The purpose of combustion gas bulk concentration.
Combustible gas probe is usually the top passed through connecting terminal and be mounted on detection environment.I.e. connecting terminal with it is flammable
The pedestal of gas detector is fixed, pedestal installation roof indoors, in installation, connecting terminal downward, in the prior art
Connecting terminal screw not anticreep, in this way when unscrewing connecting terminal and carrying out wiring, it is easy to twist line pressing bolt and fall off, to construction
Great inconvenience is brought, and there are security risks.
Summary of the invention
In order to overcome the shortage of prior art, it is proposed that it is a kind of for preventing the connecting terminal of toner screw, it effectively prevents
The phenomenon that screw can fall off during wiring improves the convenience of construction.
The invention proposes a kind of for preventing the connecting terminal of toner screw, comprising: firm banking, terminal tabletting and group
Close screw；
It is provided with terminal fixing grooves on the firm banking, the openings of the terminal fixing grooves is towards in the firm banking
The heart；
The terminal tabletting is detachably connected with the terminal fixing grooves, shape between the terminal tabletting and the terminal fixing grooves
At the cavity for accommodating the screw assemblies；
The terminal tabletting includes top plate, and flange tapping hole is provided on the top plate；
The screw assemblies are connect by the flange tapping hole with the terminal tabletting, and the terminal tabletting is to the combination spiral shell
The stroke of nail carries out lower limit position limit.
Further, the terminal tabletting further includes contact pin；
Side of the top plate far from the opening is arranged in the contact pin, and the angle between the top plate is 90 degree.
Further, the terminal fixing grooves include the first detent slot；
The first detent slot is oppositely arranged with the opening, and the first detent slot carries out the stroke of the screw assemblies
The limit of pole position；
The contact pin and the first detent slot clearance fit.
Further, the two sides that the top plate closes on the terminal fixing grooves are provided with hangnail.
Further, the interior of the terminal fixing grooves is vertically arranged with the second detent slot；
The second detent slot and the hangnail are interference fitted, to limit the flange tapping hole in the terminal fixing grooves
Position.
Further, the screw assemblies include gasket and screw；
The gasket and the screw fit use；
The screw is connected on the flange tapping hole by the gasket, to realize crimping by the up and down motion of the screw
The adjusting of space size.
Further, the top edge of the side wall of the terminal fixing grooves is provided with limiting slot；
The gasket is limited in the cavity by the limiting slot.
Further, the number of the terminal fixing grooves is multiple, and multiple terminal fixing grooves are along the firm banking
Center arrangement.
Further, the material of the firm banking is plastics.
Include: in a kind of connecting terminal for preventing toner screw proposed by the present invention firm banking, terminal tabletting and
Screw assemblies, are provided with terminal fixing grooves on the fixed base, and the openings of terminal fixing grooves is towards the center of firm banking, terminal
Tabletting is detachably connected with terminal fixing grooves, and the sky for accommodating screw assemblies is formed between terminal tabletting and terminal fixing grooves
Chamber, terminal tabletting include top plate, and flange tapping hole is provided on top plate, and screw assemblies are connected by flange tapping hole and terminal tabletting
It connects, terminal tabletting carries out lower limit position limit to the stroke of screw assemblies, effectively defines screw assemblies by above-mentioned setting
Stroke in firm banking and terminal tabletting, screw assemblies pass through the restriction of flange tapping hole, further avoid wiring
Screw assemblies fall off in the process, improve the safety and convenience of construction.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, better embodiment is cited below particularly, and match
Appended attached drawing is closed, is described in detail below.
Detailed description of the invention
By referring to the following drawings detailed description of non-limiting embodiments, it can be illustrated more clearly that the present invention
Specific embodiment or technical solution in the prior art, below will be to required in specific embodiment or description of the prior art
The attached drawing used is briefly described, in this way, other features, purposes and advantages of the invention will become more apparent.It is aobvious and easy
Insight, the accompanying drawings in the following description are some embodiments of the present invention, for those of ordinary skill in the art, are not being paid
Out under the premise of creative work, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of top view of the connecting terminal for preventing toner screw provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the connecting terminal for preventing toner screw provided in an embodiment of the present invention；
Fig. 3 is terminal tabletting and screw assemblies in a kind of connecting terminal for preventing toner screw provided in an embodiment of the present invention
The schematic diagram being used cooperatively；
Fig. 4 is terminal tabletting and screw assemblies in a kind of connecting terminal for preventing toner screw provided in an embodiment of the present invention
Structural schematic diagram；
In figure: 1- firm banking, the tabletting of 2- terminal, 3- screw assemblies, 11- terminal fixing grooves, the first detent of 111- slot, 112-
Two detent slots, 113- limiting slot, 21- contact pin, 22- top plate, 23- flange tapping hole, 24- hangnail, 31- gasket, 32- screw.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In view of existing combustible gas probe can fall off during the installation process since terminal connections loosen, the present invention
Embodiment provides a kind of for preventing the connecting terminal of toner screw；The technology, which can be applied to combustible gas probe etc., to be needed
In the device to be lifted connection place, describe in detail below to the embodiment of the present invention.
Embodiment one:
Firstly, referring to Fig.1, Fig. 2, Fig. 3 and Fig. 4 come describe the embodiment of the present invention proposition it is a kind of for preventing connecing for toner screw
Line terminals.
It for preventing the connecting terminal of toner screw includes: firm banking 1, terminal tabletting 2 and screw assemblies 3 that this is a kind of,
In the installation process of combustible gas probe, firm banking is usually to be lifted on the roof of detection environment.In implementation process
In, the shape of firm banking can flexibly be set, in general, the shape of firm banking is circle, and be designed to other shapes phase
Than circle is not only convenient for producing, and during the installation process convenient for operation.
In addition, the material of firm banking is plastics.The plastics are insulator, can effectively completely cut off electric energy transmitting.With it is other
Material is compared, and the firm banking of plastic material is lighter.
It is provided with terminal fixing grooves 11 on the fixed base, in general, the inside of firm banking is groove, terminal fixing grooves are set
It is placed in above-mentioned groove, the opening of terminal fixing grooves is towards the center of firm banking so that it is convenient to which construction personnel is in above-mentioned groove
Interior operative combination screw etc..The number of terminal fixing grooves be it is multiple, multiple combustible gas probes of installation etc. can be met simultaneously
The demand of device in order to save space, also, is easily installed, and above-mentioned multiple terminal fixing grooves are arranged along the center of firm banking,
For example, above-mentioned multiple terminal fixing grooves are successively arranged along the center of circle of firm banking when the shape of firm banking is round.
In the connecting terminal for being used to prevent toner screw, terminal tabletting is detachably connected with terminal fixing grooves, is being needed
Before combustible gas probe is installed, terminal tabletting is placed into terminal fixing grooves and is attached, in this way, terminal tabletting with
The cavity for accommodating screw assemblies is formed between terminal fixing grooves, to be combined the installation of screw.It, can in production process
Terminal tabletting and screw assemblies are cold-pressed corresponding terminal fixing grooves on the fixed base together by automated production equipment
It is interior.
Above-mentioned terminal tabletting includes top plate, and flange tapping hole is provided on top plate, in general, in being provided in flange tapping hole
Screw thread.In implementation process, the top plate of terminal tabletting is horizontally arranged at above-mentioned cavity inside.
Said combination screw is connect by flange tapping hole with terminal tabletting, specifically, passing through the restriction of above-mentioned internal screw thread
It slide screw assemblies will not directly from flange tapping hole, terminal tabletting carries out lower limit position limit to the stroke of screw assemblies
Position.
In addition, above-mentioned terminal tabletting further includes contact pin 21, side of the top plate far from opening is arranged in contact pin, i.e. contact pin is close
The edge of firm banking is arranged, also, the angle between contact pin and top plate is 90 degree, in specific implementation process, contact pin and top plate
Angle between 22 can be adjusted flexibly, to adapt to based on the design curve inside terminal fixing grooves.
In order to realize effective fixation to screw assemblies, above-mentioned terminal fixing grooves include the first detent slot 111, the first detent
Slot is oppositely arranged with opening, i.e., the edge of firm banking is arranged in usual first detent slot, and contact pin is matched with the first detent slot gap
It closes, above-mentioned terminal tabletting is fixed in terminal fixing grooves, and then make the first detent slot to the row of screw assemblies
The upper pole position limit of Cheng Jinhang.
In addition, the top plate of above-mentioned terminal tabletting is provided with hangnail in the two sides for closing on terminal fixing grooves, need to illustrate
It is that quantity, interval of hangnail setting etc. can be adjusted flexibly according to the specific setting of terminal fixing grooves.
Corresponding, the interior of above-mentioned terminal fixing grooves is vertically arranged with the second detent slot 112, and the second detent slot is set
It sets in the opening for closing on terminal fixing grooves, the second detent slot and above-mentioned hangnail 24 are interference fitted, are existed with limiting flange tapping hole
Position in terminal fixing grooves, to effectively define position of the screw assemblies in terminal fixing grooves, during the installation process, group
It closes screw and above-mentioned flange tapping hole cooperates, in general, being provided with internal screw thread in flange tapping hole 23, and then ensure that combination
Screw will not be slipped from above-mentioned flange tapping hole.
Specifically, screw assemblies include gasket 31 and screw 32, screw is usually oblateness, and gasket is generally rectangular, and
And the centre of gasket is provided with aperture, gasket is used with screw by above-mentioned apertures, and in implementation process, gasket is by screw
It is connected on flange tapping hole, during unscrewing terminal connections, crimping space size is realized by the up and down motion of screw
Adjusting, i.e., when screw is moved upwards along gasket, distance between the two reduces, and crimping space also becomes smaller accordingly；Screw
When moving downward along gasket, distance between the two becomes larger, and crimping space also becomes larger accordingly.
In addition, the top edge of the side wall of terminal fixing grooves is provided with limiting slot 113, and in implementation process, above-mentioned limiting slot
It is typically located at the card convex of terminal fixing grooves side wall top edge, also, above-mentioned card convex is vertically arranged with side wall, terminal tabletting water
Flat to be arranged in cavity, screw assemblies are connect by flange tapping hole with terminal tabletting, and gasket is limited in cavity by limiting slot.
It is provided in an embodiment of the present invention it is a kind of for preventing the connecting terminal of toner screw include: firm banking, terminal pressure
Piece and screw assemblies, are provided with terminal fixing grooves on the fixed base, the openings of terminal fixing grooves towards the center of firm banking,
Terminal tabletting is detachably connected with terminal fixing grooves, is formed between terminal tabletting and terminal fixing grooves for accommodating screw assemblies
Cavity, terminal tabletting include top plate, and flange tapping hole is provided on top plate, and screw assemblies pass through flange tapping hole and terminal tabletting
Connection, terminal tabletting carry out lower limit position limit to the stroke of screw assemblies, effectively define combination spiral shell by above-mentioned setting
The stroke range in firm banking and terminal tabletting is followed closely, screw assemblies will not slide from above-mentioned flange tapping hole, thus
Falling off for screw assemblies during wiring is avoided, the convenience of construction is improved, ensure that construction safety.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of for preventing the connecting terminal of toner screw characterized by comprising firm banking, terminal tabletting and combination
Screw；
It is provided with terminal fixing grooves on the firm banking, the openings of the terminal fixing grooves is towards in the firm banking
The heart；
The terminal tabletting is detachably connected with the terminal fixing grooves, shape between the terminal tabletting and the terminal fixing grooves
At the cavity for accommodating the screw assemblies；
The terminal tabletting includes top plate, and flange tapping hole is provided on the top plate；
The screw assemblies are connect by the flange tapping hole with the terminal tabletting, and the terminal tabletting is to the combination spiral shell
The stroke of nail carries out lower limit position limit.
2. according to claim 1 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the terminal pressure
Piece further includes contact pin；
Side of the top plate far from the opening is arranged in the contact pin, and the angle between the top plate is 90 degree.
3. according to claim 2 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the terminal is solid
Determining slot includes the first detent slot；
The first detent slot is oppositely arranged with the opening, and the first detent slot carries out the stroke of the screw assemblies
The limit of pole position；
The contact pin and the first detent slot clearance fit.
4. according to claim 1 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the top plate faces
The two sides of the nearly terminal fixing grooves are provided with hangnail.
5. according to claim 4 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the terminal is solid
The interior for determining slot is vertically arranged with the second detent slot；
The second detent slot and the hangnail are interference fitted, to limit the flange tapping hole in the terminal fixing grooves
Position.
6. according to claim 3 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the combination spiral shell
Nail includes gasket and screw；
The gasket and the screw fit use；
The screw is connected on the flange tapping hole by the gasket, to realize crimping by the up and down motion of the screw
The adjusting of space size.
7. according to claim 6 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the terminal is solid
The top edge for determining the side wall of slot is provided with limiting slot；
The gasket is limited in the cavity by the limiting slot.
8. according to claim 1 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the terminal is solid
Determine slot number be it is multiple, multiple terminal fixing grooves along the firm banking center arrange.
9. according to claim 1 a kind of for preventing the connecting terminal of toner screw, which is characterized in that the fixed bottom
The material of seat is plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540627.9A CN110247201A (en) | 2019-06-21 | 2019-06-21 | It is a kind of for preventing the connecting terminal of toner screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540627.9A CN110247201A (en) | 2019-06-21 | 2019-06-21 | It is a kind of for preventing the connecting terminal of toner screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110247201A true CN110247201A (en) | 2019-09-17 |
Family
ID=67888659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910540627.9A Pending CN110247201A (en) | 2019-06-21 | 2019-06-21 | It is a kind of for preventing the connecting terminal of toner screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110247201A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534929A (en) * | 2019-09-29 | 2019-12-03 | 宁波奥克斯电气股份有限公司 | A kind of connecting terminal and air conditioner |
-
2019
- 2019-06-21 CN CN201910540627.9A patent/CN110247201A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534929A (en) * | 2019-09-29 | 2019-12-03 | 宁波奥克斯电气股份有限公司 | A kind of connecting terminal and air conditioner |
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Address after: 066000 No.66 Xigang North Road, Haigang District, Qinhuangdao City, Hebei Province Applicant after: Nit Intelligent Technology Co.,Ltd. Address before: 066000 No.66 Xigang North Road, Haigang District, Qinhuangdao City, Hebei Province Applicant before: Nitip Fire Technology Co.,Ltd. Address after: 066000 No.66 Xigang North Road, Haigang District, Qinhuangdao City, Hebei Province Applicant after: Nitip Fire Technology Co.,Ltd. Address before: 066000 No.66 Xigang North Road, Haigang District, Qinhuangdao City, Hebei Province Applicant before: QINHUANGDAO NEAT INTELLIGENT TECHNOLOGY Co.,Ltd. |