CN106480798B - The production method of self-bonding road repair pitch module - Google Patents
The production method of self-bonding road repair pitch module Download PDFInfo
- Publication number
- CN106480798B CN106480798B CN201611020888.0A CN201611020888A CN106480798B CN 106480798 B CN106480798 B CN 106480798B CN 201611020888 A CN201611020888 A CN 201611020888A CN 106480798 B CN106480798 B CN 106480798B
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- China
- Prior art keywords
- layer
- tungsten wire
- pitch
- tungsten
- pitch module
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- Expired - Fee Related
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Revetment (AREA)
Abstract
Self-bonding road repair pitch module, pitch module are combined by asphalt surface course, reinforcement stratum reticulare, spun-bonded non-woven fabrics layer, tungsten wire layer, melt-blown non-woven fabric layer and asphalt base course from top to bottom；The tungsten wire layer is mated formation between spun-bonded non-woven fabrics layer and melt-blown non-woven fabric layer；Tungsten wire layer is respectively mated formation by several tungsten wires with the arrangement of U-shaped structure sequence, and the both ends of each tungsten wire are arranged in pitch module side, and are connect by conducting wire one with power positive cathode；With the series connection of conducting wire two between the tungsten wire mated formation per two adjacent U-shaped structures.Pitch module strength of the invention greatly increases；It since tungsten wire layer includes the tungsten wire of multiple U-shaped structures, can cut out as various required shapes, section need to be repaired by putting it into, and melt pitch by electrified regulation, reached repairing effect, played resistance to compression, resistance to deformation, durable effect；Tungsten wire layer is added, it is more convenient instead of traditional handicraft with the heating and softening pitch of tungsten wire layer.
Description
Technical field
The present invention relates to self-bonding road repair pitch modules, are related to town road maintenance field.
Background technique
Currently, mostly using pitch to repair when repairing road, but often there is Rapid Damage after repairing.Main cause exists
Be not bonded in repair layer with original bitumen layer, base, or repairing when temperature be not suitable for, temperature is too low, repair layer with it is original
Bitumen layer, base are not combined together.It is rolled for a long time, surface layer falls off.Conventional technique is to fall heated pitch
Enter in designed hole and is compacted.Such method is also limited by weather, and small-scale repairing cost is huge.
Summary of the invention
In view of defects in the prior art, the invention aims to provide a kind of self-bonding road repair pitch mould
Block, prefabricated heatable pitch module, section need to be repaired by putting it into, and using the repairing of common process, play resistance to compression, resistance
Shape, fitting is secured, durable effect.
To achieve the above object, the adopted technical solution is that：
Self-bonding road repair pitch module, it is characterised in that:Pitch module is from top to bottom by asphalt surface course, reinforcement
Stratum reticulare, spun-bonded non-woven fabrics layer, tungsten wire layer, melt-blown non-woven fabric layer and asphalt base course are combined；The tungsten wire layer is mated formation in spunbond
Between nonwoven layer and melt-blown non-woven fabric layer；Tungsten wire layer is respectively mated formation by several tungsten wires with the arrangement of U-shaped structure sequence, often
The both ends of a tungsten wire are arranged in pitch module side, and are connect by conducting wire one with power positive cathode；Per two adjacent U-shaped knots
With the series connection of conducting wire two between the tungsten wire that structure is mated formation.
Reinforcement stratum reticulare is iron wire mesh grid.
Power supply is 220V municipal administration power supply.
The self-bonding road repair application method of pitch module, its step are as follows：
1）The groove for opening up on road and being adapted with pitch module need to repaired；
2）The pitch module of monolith is put into groove；
3）It will be connect by conducting wire one with positive and negative anodes apart from farthest tungsten wire both ends, connect municipal power supply；
4）Tungsten wire layer after energization transfers heat to asphalt base course, and the asphalt base course of high temperature melts the pitch in pitch module, into
And pitch module and original path close adhesion；
5）Power supply is disconnected, conducting wire one is recycled；
6）Module is compacted using common process.
The application method of self-bonding road repair pitch module, step are：
1）The groove for opening up on road and being adapted with several pitch modules need to repaired；
2）Muti-piece pitch block coupled in series is integral, it is put into groove；
3）The pitch module being connected in series is connect by conducting wire one with positive and negative anodes apart from farthest tungsten wire both ends, connects city
Political affairs power supply；
4）Tungsten wire layer after energization transfers heat to asphalt base course, and the asphalt base course of high temperature melts the pitch in pitch module, into
And pitch module and original path close adhesion；
5）Power supply is disconnected, conducting wire one is recycled；
6）Module is compacted using common process.
The application method of self-bonding road repair pitch module, step are：
1）The groove that regular shape is opened up on road need to repaired；
2）It is recessed that direction between two adjacent U-shaped structures in monolith pitch module, along vertical wires two cuts adaptation
The pitch module of groove shape, is put into groove；
3）Pitch module after shearing is connect by conducting wire one with positive and negative anodes apart from farthest tungsten wire both ends, connects city
Political affairs power supply；
4）Tungsten wire layer after energization transfers heat to asphalt base course, and the asphalt base course of high temperature melts the pitch in pitch module, into
And pitch module and original path close adhesion；
5）Power supply is disconnected, conducting wire one is recycled；
6）Module is compacted using common process.
The production method of self-bonding road repair pitch module, step are：
1）The asphalt surface course of the suitable road repair shape of prefabricated 2-3CM thickness, is placed in horizontal machine table, thereon
Place the reinforcing mat of identical size；Spun-bonded non-woven fabrics are placed on reinforcing mat again；
2）It is laid with tungsten wire on the spun-bonded non-woven fabrics for placing reinforcing mat, several tungsten wires are paved with it respectively with U-shaped structure side by side
Surface, and reserved connector and connecting wire；
3）Melt spraying non-woven fabrics are spread on tungsten wire layer, then 130 DEG C to 180 DEG C of 2-3CM thickness are coated on its surface
Pitch；
4）Placement is down to 60 degree to 80 degree, carries out smooth processing by pressure roller, then places naturally and be down to room temperature pitch is made
Module.
After adopting the above scheme, it has the advantages that compared with prior art：By spun-bonded non-woven fabrics layer, reinforce stratum reticulare
Its intensity of the compound nonwoven cloth being combined with melt-blown non-woven fabric layer greatly increases；Pitch module of the invention, due to tungsten wire layer
Tungsten wire comprising multiple U-shaped structures can be cut out as various required shapes, and section need to be repaired by putting it into, by electrified regulation
Melt pitch, reaches repairing effect, play resistance to compression, resistance to deformation, durable effect；Tungsten wire layer is added, it is soft with the heating of tungsten wire layer
Change pitch, it is more convenient instead of traditional handicraft.
Detailed description of the invention
Fig. 1, the structural schematic diagram of self-bonding road repair pitch module,
Fig. 2, tungsten wire schematic diagram of a layer structure,
In figure：1, asphalt surface course, 2, reinforcement stratum reticulare, 3, spun-bonded non-woven fabrics layer, 4, tungsten wire layer, 5, melt-blown non-woven fabric layer, 6,
Asphalt base course, 7, U-shaped tungsten wire, 8, conducting wire two.
Specific embodiment
Embodiment one：
Self-bonding road repair pitch module, it is characterised in that:Pitch module is from top to bottom by asphalt surface course 1, reinforcement
Stratum reticulare 2, spun-bonded non-woven fabrics layer 3, tungsten wire layer 4, melt-blown non-woven fabric layer 5 and asphalt base course 6 are combined；The tungsten wire layer 4 is mated formation
Between spun-bonded non-woven fabrics layer 3 and melt-blown non-woven fabric layer 5；Tungsten wire layer 4 is respectively arranged with U-shaped structure sequence by several tungsten wires and is spread
It fills, the both ends of each tungsten wire are arranged in pitch module side, and are connect by conducting wire one with power positive cathode；Per adjacent
With the series connection of conducting wire two between the tungsten wire that two U-shaped structures are mated formation.
Reinforcement stratum reticulare 2 is iron wire mesh grid.
Power supply is 220V municipal administration power supply.
The self-bonding road repair application method of pitch module, its step are as follows：
1）The groove for opening up on road and being adapted with pitch module need to repaired；
2）The pitch module of monolith is put into groove；
3）It will be connect by conducting wire one with positive and negative anodes apart from farthest tungsten wire both ends, connect municipal power supply；
4）Tungsten wire layer after energization transfers heat to asphalt base course, and the asphalt base course of high temperature melts the pitch in pitch module, into
And pitch module and original path close adhesion；
5）Power supply is disconnected, conducting wire one is recycled；
6）Module is compacted using common process.
The production method of self-bonding road repair pitch module, step are：
1）The asphalt surface course of the suitable road repair shape of prefabricated 2-3CM thickness, is placed in horizontal machine table, thereon
Place the reinforcing mat of identical size；Spun-bonded non-woven fabrics are placed on reinforcing mat again；
2）It is laid with tungsten wire on the spun-bonded non-woven fabrics for placing reinforcing mat, several tungsten wires are paved with it respectively with U-shaped structure side by side
Surface, and reserved connector and connecting wire；
3）Melt spraying non-woven fabrics are spread on tungsten wire layer, then 130 DEG C to 180 DEG C of 2-3CM thickness are coated on its surface
Pitch；
4）Placement is down to 60 degree to 80 degree, carries out smooth processing by pressure roller, then places naturally and be down to room temperature pitch is made
Module.
Embodiment two：
Self-bonding road repair pitch module, it is characterised in that:Pitch module is from top to bottom by asphalt surface course 1, reinforcement
Stratum reticulare 2, spun-bonded non-woven fabrics layer 3, tungsten wire layer 4, melt-blown non-woven fabric layer 5 and asphalt base course 6 are combined；The tungsten wire layer 4 is mated formation
Between spun-bonded non-woven fabrics layer 3 and melt-blown non-woven fabric layer 5；Tungsten wire layer 4 is respectively arranged with U-shaped structure sequence by several tungsten wires and is spread
It fills, the both ends of each tungsten wire are arranged in pitch module side, and are connect by conducting wire one with power positive cathode；Per adjacent
With the series connection of conducting wire two between the tungsten wire that two U-shaped structures are mated formation.
Reinforcement stratum reticulare 2 is iron wire mesh grid.
Power supply is 220V municipal administration power supply.
The application method of self-bonding road repair pitch module, step are：
1）The groove for opening up on road and being adapted with several pitch modules need to repaired；
2）Muti-piece pitch block coupled in series is integral, it is put into groove；
3）The pitch module being connected in series is connect by conducting wire one with positive and negative anodes apart from farthest tungsten wire both ends, connects city
Political affairs power supply；
4）Tungsten wire layer after energization transfers heat to asphalt base course, and the asphalt base course of high temperature melts the pitch in pitch module, into
And pitch module and original path close adhesion；
5）Power supply is disconnected, conducting wire one is recycled；
6）Module is compacted using common process.
The production method of self-bonding road repair pitch module, step are：
1）The asphalt surface course of the suitable road repair shape of prefabricated 2-3CM thickness, is placed in horizontal machine table, thereon
Place the reinforcing mat of identical size；Spun-bonded non-woven fabrics are placed on reinforcing mat again；
2）It is laid with tungsten wire on the spun-bonded non-woven fabrics for placing reinforcing mat, several tungsten wires are paved with it respectively with U-shaped structure side by side
Surface, and reserved connector and connecting wire；
3）Melt spraying non-woven fabrics are spread on tungsten wire layer, then 130 DEG C to 180 DEG C of 2-3CM thickness are coated on its surface
Pitch；
4）Placement is down to 60 degree to 80 degree, carries out smooth processing by pressure roller, then places naturally and be down to room temperature pitch is made
Module.
Embodiment three：
Self-bonding road repair pitch module, it is characterised in that:Pitch module is from top to bottom by asphalt surface course 1, reinforcement
Stratum reticulare 2, spun-bonded non-woven fabrics layer 3, tungsten wire layer 4, melt-blown non-woven fabric layer 5 and asphalt base course 6 are combined；The tungsten wire layer 4 is mated formation
Between spun-bonded non-woven fabrics layer 3 and melt-blown non-woven fabric layer 5；Tungsten wire layer 4 is respectively arranged with U-shaped structure sequence by several tungsten wires and is spread
It fills, the both ends of each tungsten wire are arranged in pitch module side, and are connect by conducting wire one with power positive cathode；Per adjacent
With the series connection of conducting wire two between the tungsten wire that two U-shaped structures are mated formation.
Reinforcement stratum reticulare 2 is iron wire mesh grid.
Power supply is 220V municipal administration power supply.
The application method of self-bonding road repair pitch module, step are：
1）The groove that regular shape is opened up on road need to repaired；
2）It is recessed that direction between two adjacent U-shaped structures in monolith pitch module, along vertical wires two cuts adaptation
The pitch module of groove shape, is put into groove；
3）Pitch module after shearing is connect by conducting wire one with positive and negative anodes apart from farthest tungsten wire both ends, connects city
Political affairs power supply；
4）Tungsten wire layer after energization transfers heat to asphalt base course, and the asphalt base course of high temperature melts the pitch in pitch module, into
And pitch module and original path close adhesion；
5）Power supply is disconnected, conducting wire one is recycled；
6）Module is compacted using common process.
The production method of self-bonding road repair pitch module, step are：
1）The asphalt surface course of the suitable road repair shape of prefabricated 2-3CM thickness, is placed in horizontal machine table, thereon
Place the reinforcing mat of identical size；Spun-bonded non-woven fabrics are placed on reinforcing mat again；
2）It is laid with tungsten wire on the spun-bonded non-woven fabrics for placing reinforcing mat, several tungsten wires are paved with it respectively with U-shaped structure side by side
Surface, and reserved connector and connecting wire；
3）Melt spraying non-woven fabrics are spread on tungsten wire layer, then 130 DEG C to 180 DEG C of 2-3CM thickness are coated on its surface
Pitch；
4）Placement is down to 60 degree to 80 degree, carries out smooth processing by pressure roller, then places naturally and be down to room temperature pitch is made
Module.
Tungsten wire layer of the invention includes the tungsten wire of multiple U-shaped structures, can cut required shape as needed, and putting it into needs
Repair section；In addition not only can be with monolith application, but also can be combined with muti-piece and be used by the method for embodiment two；Add by being connected to power supply
Heat and repairing, can make pitch module combine closely with surrounding, play resistance to compression, resistance to deformation is resistance to the pitch in soft pitch module
Effect.
Claims (3)
1. the self-bonding road repair production method of pitch module, pitch module is from top to bottom by asphalt surface course (1), reinforcing mat
Layer (2), spun-bonded non-woven fabrics layer (3), tungsten wire layer (4), melt-blown non-woven fabric layer (5) and asphalt base course (6) are combined；The tungsten wire
Layer (4) is mated formation between spun-bonded non-woven fabrics layer (3) and melt-blown non-woven fabric layer (5)；Tungsten wire layer (4) is by several tungsten wires respectively with U
The arrangement of type structural order is mated formation, and the both ends of each tungsten wire are arranged in pitch module side, and just by conducting wire one and power supply
Cathode connection；With the series connection of conducting wire two between the tungsten wire mated formation per two adjacent U-shaped structures, it is characterised in that：
1）The asphalt surface course of the suitable road repair shape of prefabricated 2-3CM thickness, is placed in horizontal machine table, places phase thereon
With the reinforcing mat of size；Spun-bonded non-woven fabrics are placed on reinforcing mat again；
2）It is laid with tungsten wire on the spun-bonded non-woven fabrics for placing reinforcing mat, several tungsten wires are paved with its surface side by side respectively with U-shaped structure,
And reserve connector and connecting wire；
3）Melt spraying non-woven fabrics are spread on tungsten wire layer, then its surface is coated to 130 DEG C to 180 DEG C of pitch of 2-3CM thickness；
4）Placement is down to 60 degree to 80 degree, carries out smooth processing by pressure roller, then places naturally and be down to room temperature pitch module is made.
2. the production method of self-bonding road repair pitch module according to claim 1, it is characterised in that：It is described to add
Strong stratum reticulare (2) is iron wire mesh grid.
3. the production method of self-bonding road repair pitch module according to claim 1, it is characterised in that：The electricity
Source is 220V municipal administration power supply.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385081.XA CN108411730B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810386337.9A CN108532405B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810385065.0A CN108532404B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201611020888.0A CN106480798B (en) | 2016-11-21 | 2016-11-21 | The production method of self-bonding road repair pitch module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020888.0A CN106480798B (en) | 2016-11-21 | 2016-11-21 | The production method of self-bonding road repair pitch module |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810385081.XA Division CN108411730B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810386337.9A Division CN108532405B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810385065.0A Division CN108532404B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106480798A CN106480798A (en) | 2017-03-08 |
| CN106480798B true CN106480798B (en) | 2018-11-30 |
Family
ID=58272654
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810385081.XA Active CN108411730B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810386337.9A Expired - Fee Related CN108532405B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810385065.0A Active CN108532404B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201611020888.0A Expired - Fee Related CN106480798B (en) | 2016-11-21 | 2016-11-21 | The production method of self-bonding road repair pitch module |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810385081.XA Active CN108411730B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810386337.9A Expired - Fee Related CN108532405B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
| CN201810385065.0A Active CN108532404B (en) | 2016-11-21 | 2016-11-21 | Application method of self-attaching asphalt module for road repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN108411730B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681053A (en) * | 2020-12-08 | 2021-04-20 | 江苏现代路桥有限责任公司 | Maintenance material for uneven surface of structure and use method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01256603A (en) * | 1988-04-06 | 1989-10-13 | Kawasaki Steel Corp | Asphalt pavement excellent in rut resisting property |
| EP0506196A1 (en) * | 1991-03-25 | 1992-09-30 | Hollandsche Beton Groep N.V. | Method for sealing the joint between two road parts which are movable relative to each other and are provided with an asphalt road surface, in particular the joint between two bridge roadway parts or between a bridge roadway part and a land-abutment part |
| JP3188789B2 (en) * | 1993-04-21 | 2001-07-16 | 義之 大串 | Asphalt pavement structure |
| CN202194045U (en) * | 2011-04-26 | 2012-04-18 | 泰兴市市政工程有限公司 | Asphalt pavement surface interlayer of municipal road |
| CN103556559A (en) * | 2013-10-31 | 2014-02-05 | 大连创达技术交易市场有限公司 | Non-woven fabric for road repairing |
| CN104640249A (en) * | 2015-01-23 | 2015-05-20 | 北京东方雨虹防水技术股份有限公司 | Electrically-induced-heating functional composite water-proof material and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4330639B2 (en) * | 2006-03-29 | 2009-09-16 | 株式会社竹中工務店 | Asphalt pavement removal method, asphalt pavement removal system, electromagnetic induction coil unit, asphalt pavement removal apparatus, and peeling method |
| CN202482745U (en) * | 2011-11-30 | 2012-10-10 | 矢岛浩二 | Repairing patch for asphalt road |
-
2016
- 2016-11-21 CN CN201810385081.XA patent/CN108411730B/en active Active
- 2016-11-21 CN CN201810386337.9A patent/CN108532405B/en not_active Expired - Fee Related
- 2016-11-21 CN CN201810385065.0A patent/CN108532404B/en active Active
- 2016-11-21 CN CN201611020888.0A patent/CN106480798B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01256603A (en) * | 1988-04-06 | 1989-10-13 | Kawasaki Steel Corp | Asphalt pavement excellent in rut resisting property |
| EP0506196A1 (en) * | 1991-03-25 | 1992-09-30 | Hollandsche Beton Groep N.V. | Method for sealing the joint between two road parts which are movable relative to each other and are provided with an asphalt road surface, in particular the joint between two bridge roadway parts or between a bridge roadway part and a land-abutment part |
| JP3188789B2 (en) * | 1993-04-21 | 2001-07-16 | 義之 大串 | Asphalt pavement structure |
| CN202194045U (en) * | 2011-04-26 | 2012-04-18 | 泰兴市市政工程有限公司 | Asphalt pavement surface interlayer of municipal road |
| CN103556559A (en) * | 2013-10-31 | 2014-02-05 | 大连创达技术交易市场有限公司 | Non-woven fabric for road repairing |
| CN104640249A (en) * | 2015-01-23 | 2015-05-20 | 北京东方雨虹防水技术股份有限公司 | Electrically-induced-heating functional composite water-proof material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106480798A (en) | 2017-03-08 |
| CN108411730A (en) | 2018-08-17 |
| CN108532405B (en) | 2020-06-02 |
| CN108532405A (en) | 2018-09-14 |
| CN108532404A (en) | 2018-09-14 |
| CN108532404B (en) | 2020-12-08 |
| CN108411730B (en) | 2020-04-28 |
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Effective date of registration: 20180124 Address after: 116000 Jinlong North Road, Ganjingzi District, Dalian, Liaoning Province, No. 51 3-3-2 Applicant after: Jiang Qiuju Address before: 116000 Xigang City, Liaoning Province, the new open road, No. 20, layer 3, No., No. 9 Applicant before: Xiao Jian Technology (Dalian) Co., Ltd. |
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Effective date of registration: 20181018 Address after: 330038 honggan new building four, Ganjiang road 1426, honggantan New District, Nanchang, Jiangxi Applicant after: Jiangxi Transportation Engineering Group Co., Ltd. Address before: 116000 3-3-2, 51 Jinlong North Road, Ganjingzi District, Dalian, Liaoning. Applicant before: Jiang Qiuju |
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Granted publication date: 20181130 Termination date: 20191121 |