CN107454532A - A kind of double regulation magnetic circuits of loudspeaker - Google Patents
A kind of double regulation magnetic circuits of loudspeaker Download PDFInfo
- Publication number
- CN107454532A CN107454532A CN201710890152.7A CN201710890152A CN107454532A CN 107454532 A CN107454532 A CN 107454532A CN 201710890152 A CN201710890152 A CN 201710890152A CN 107454532 A CN107454532 A CN 107454532A
- Authority
- CN
- China
- Prior art keywords
- copper coil
- iron
- loudspeaker
- coil
- magnetosheath
- 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.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 76
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910052802 copper Inorganic materials 0.000 claims abstract description 48
- 239000010949 copper Substances 0.000 claims abstract description 48
- 229910052742 iron Inorganic materials 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 6
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 5
- 229910000906 Bronze Inorganic materials 0.000 claims description 4
- 239000010974 bronze Substances 0.000 claims description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 4
- 241001061264 Astragalus Species 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009711 regulatory function Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention discloses a kind of double regulation magnetic circuits of loudspeaker, including T iron, magnet steel and upper conduction magnetic board, described magnet steel is set in T iron, described upper conduction magnetic board is fixed on described magnet steel upper surface, the periphery of described magnet steel is surrounded with the first copper coil of some circles, magnetosphere is embedded with the center column of described T iron, the periphery of described magnetosphere is surrounded with the second copper coil of some circles, the first described copper coil and the both ends of the second copper coil connect and compose two closed-loop paths by wire and power supply, the first described copper coil concatenates one first regulation resistance with the closed-loop path of electric power generating composition, the second described copper coil concatenates one second regulation resistance with the closed-loop path of electric power generating composition.The present invention forms two magnetic route structure using magnet steel and magnetosphere, and in magnet steel and magnetosphere outer wrap copper coil, has inductance effect, and forms double loop, by setting regulation resistance on loop, reaches the effect that magnetic field intensity can be adjusted on a large scale.
Description
【Technical field】
The present invention relates to the technical field of loudspeaker, more particularly to a kind of double regulation magnetic circuits of loudspeaker.
【Background technology】
Loudspeaker is also known as " loudspeaker ", is a kind of very conventional electro-acoustic transducer device, in the electronic electric equipment of sounding
It can be seen.Loudspeaker has numerous species, but its basic operation principle is similar, is that one kind converts electrical signals to
The element that voice signal is reset.At present, the most widely used is dynamic speaker, and it is by vibrating membrane, voice coil loudspeaker voice coil, permanent
Magnet, support etc. form.After the voice coil loudspeaker voice coil of loudspeaker is passed through tone currents, voice coil loudspeaker voice coil just produces the magnetic of alternation in the presence of electric current
, permanent magnet also produces the constant constant magnetic field of a size and Orientation simultaneously.It is big due to magnetic field caused by voice coil loudspeaker voice coil
Small and direction is constantly changing with the change of tone currents, and the interaction in two such magnetic field makes voice coil loudspeaker voice coil make perpendicular to voice coil loudspeaker voice coil
The motion of the middle sense of current, because voice coil loudspeaker voice coil is connected with vibrating membrane, so as to drive vibrating membrane to produce vibration, caused by vibrating membrane vibration
The vibration of air and send sound.When the electric current of input voice coil loudspeaker voice coil is bigger, the active force in its magnetic field is bigger, the width of vibrating membrane vibration
Degree is also bigger, and sound is then louder.
Find in use, the performance of loudspeaker can not be lifted very well as permanent magnet using ferrite magnetic steel, still
It is all too high using Nd-Fe-B magnet steel as permanent magnet cost, and existing subwoofer can only come out full range music,
Regulatory function without intensity, high-frequency signal is easily caused to damage subwoofer.In order to solve problem above, it is necessary to
It is proposed a kind of double regulation magnetic circuits of loudspeaker.
【The content of the invention】
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of double regulation magnetic circuits of loudspeaker,
It is aimed to solve the problem that can not lift the performance of loudspeaker very well using ferrite magnetic steel as permanent magnet in the prior art, and not have
There is the technical problem of the regulatory function of intensity.
To achieve the above object, the present invention proposes a kind of double regulation magnetic circuits of loudspeaker, including T iron, magnet steel and on
Magnetic conductive board, described magnet steel are set in T iron, and described upper conduction magnetic board is fixed on described magnet steel upper surface, described magnetic
The periphery of steel is surrounded with the first copper coil of some circles, be embedded with magnetosphere on the center column of described T iron, described magnetosphere outside
It is surrounded with the second copper coil of some circles week, the both ends of the first described copper coil and the second copper coil pass through wire and connected with power supply
Connecing and form two closed-loop paths, the first described copper coil concatenates one first regulation resistance with the closed-loop path of electric power generating composition,
The second described copper coil concatenates one second regulation resistance with the closed-loop path of electric power generating composition.
Formed preferably, the first described copper coil is helically wound around magnet steel periphery using copper wire, the second described bronze medal
Coil is helically wound around magnetosphere periphery using copper wire and formed, and the rotation direction of the first described copper coil and the second copper coil is identical.
Preferably, being provided with a ring annular groove on the center column of described T iron, and it is provided with the periphery of annular groove
One astragal ring recess, described magnetosphere are inlaid in annular groove, and the second described copper coil is located in coil groove, the second described bronze medal
The both ends of coil pass from the lower magnetic conductive board of T iron.
Preferably, described annular groove communicates with coil groove, and it is upper end open lower end closed, described annular groove
Depth be more than the depth of coil groove, the bottom of described magnetosphere and annular groove tight fit.
Preferably, described magnetosphere uses neodymium iron boron magnetosphere.
Preferably, the periphery of the first described copper coil is provided with magnetosheath, described magnetosheath is by upper magnetosheath and lower magnetosheath
Obvolvent is formed, and the through hole passed through for copper wire or wire is offered on described upper magnetosheath and lower magnetosheath.
Preferably, the equidistant circular row in lower end of described upper magnetosheath has some first card articles, described lower magnetosheath it is upper
Hold equidistant circular row to have some second card articles, the first described card article and the interlaced setting of the second card article, pass through the first card article
The upper magnetosheath of realization and lower magnetosheath fit are tightly engaged with the second card article.
Preferably, the center of described T iron is hollow, heat conducting sleeve, the lower end of T iron are provided with the hollow inwall of T iron
The thermally conductive sheet being connected with heat conducting sleeve is provided with face, some radiating fins are provided with described thermally conductive sheet.
Beneficial effects of the present invention：Compared with prior art, a kind of double regulation magnetic circuits of loudspeaker provided by the invention,
Rational in infrastructure, by being embedded in a magnetosphere again in T iron, and magnetosphere uses neodymium iron boron magnetosphere, can effectively improve magnetic property, contribute to
Lift loudspeaker parameters, moreover it is possible to ensure that voice coil loudspeaker voice coil is always maintained at vacant state in high-speed cruising, without contacting T iron axial wall, prolong significantly
The service life of voice coil loudspeaker voice coil is grown；In addition, all wrapping copper coil in the periphery of magnet steel and magnetosphere, there is inductance effect, copper coil leads to
Cross wire and connect and compose two closed-loop paths with power supply, concatenate a regulation resistance on each closed-loop path, pass through regulation resistance
Change resistance, with regard to the size of current in loop can be changed, and then adjust magnetic field intensity, adjusted using double loop, loudness of a sound
More, adjustable range is also bigger for regulating effect；Heat conducting sleeve, thermally conductive sheet and radiating fin are set in T iron, high intensity can be transported up and down
Windage heat energy caused by moving radiates in time, helps to lift the performance of loudspeaker.
The feature and advantage of the present invention will be described in detail by embodiment combination accompanying drawing.
【Brief description of the drawings】
Fig. 1 is a kind of structural representation of double regulation magnetic circuits of loudspeaker of the embodiment of the present invention；
Fig. 2 is the top view after T iron, magnet steel and the upper conduction magnetic board assembling of the embodiment of the present invention；
Fig. 3 is the structural representation of the T iron of the embodiment of the present invention；
Fig. 4 is the structural representation of the magnetosheath of the embodiment of the present invention.
In figure：Magnetic conductive board, 15- heat conducting sleeves, 16- under 1-T iron, 11- center columns, 12- annular grooves, 13- coils groove, 14-
Thermally conductive sheet, 17- radiating fins, 2- magnet steel, 3- upper conduction magnetic boards, the copper coils of 4- first, 5- magnetospheres, the copper coils of 6- second, 7- power supplys,
Magnetosheath, 103- through holes, 104- first under the regulation resistances of 8- first, the regulation resistances of 9- second, 10- magnetosheaths, the upper magnetosheaths of 101-, 102-
Card article, the card articles of 105- second.
【Embodiment】
To make the object, technical solutions and advantages of the present invention of greater clarity, below by drawings and Examples, to this
Invention is further elaborated.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention,
The scope being not intended to limit the invention.In addition, in the following description, the description to known features and technology is eliminated, to keep away
Exempt from unnecessarily to obscure idea of the invention.
Refering to Fig. 1 to Fig. 4, the embodiment of the present invention provides a kind of double regulation magnetic circuits of loudspeaker, including T iron 1, magnet steel 2
With upper conduction magnetic board 3, described magnet steel 2 is set in T iron 1, and described upper conduction magnetic board 3 is fixed on the described upper surface of magnet steel 2,
The periphery of described magnet steel 2 is surrounded with the first copper coil 4 of some circles, and magnetosphere 5 is embedded with the center column 11 of described T iron 1,
The periphery of described magnetosphere 5 is surrounded with the both ends of the second copper coil 6 of some circles, the first described copper coil 4 and the second copper coil 6
Two closed-loop paths, the closed-loop path that the first described copper coil 4 is formed with power supply 7 are connected and composed by wire and power supply 7
It is upper to concatenate one first regulation resistance 8, one second regulation is concatenated on the closed-loop path that the second described copper coil 6 is formed with power supply 7
Resistance 9.
The first described copper coil 4 is helically wound around the periphery of magnet steel 2 using copper wire and formed, and the second described copper coil 6 is adopted
The periphery of magnetosphere 5 is helically wound around with copper wire to form, the first described copper coil 4 is identical with the rotation direction of the second copper coil 6, described
A ring annular groove 12 is provided with the center column 11 of T iron 1, and an astragal ring recess 13, institute are provided with the periphery of annular groove 12
The magnetosphere 5 stated is inlaid in annular groove 12, and the second described copper coil 6 is located in coil groove 13, the second described copper coil 6
Both ends pass from the lower magnetic conductive board 14 of T iron 1, and described annular groove 12 communicates with coil groove 13, and is under upper end open
End seal is closed, and the depth of described annular groove 12 is more than the depth of coil groove 13, and the bottom of described magnetosphere 5 and annular groove 12 are tight
Coordinate, described magnetosphere 5 uses neodymium iron boron magnetosphere, and the periphery of the first described copper coil 4 is provided with magnetosheath 10, described magnetosheath
10 are formed by upper magnetosheath 101 and the lower obvolvent of magnetosheath 102, offered on described upper magnetosheath 101 and lower magnetosheath 102 for copper wire or
The through hole 103 that wire passes through, the equidistant circular row in lower end of described upper magnetosheath 101 have some first card articles 104, described lower magnetic
The equidistant circular row in upper end of set 102 has some second card articles 105, and the first described card article 104 and the second card article 105 are interlaced
Set, the upper magnetosheath 101 of realization and the lower fit of magnetosheath 102, described T iron are tightly engaged with the second card article 105 by the first card article 104
1 center is hollow, and heat conducting sleeve 15 is provided with the hollow inwall of T iron 1, is provided with the lower surface of T iron 1 and the phase of heat conducting sleeve 15
Thermally conductive sheet 16 even, some radiating fins 17 are provided with described thermally conductive sheet 16.
A kind of double regulation magnetic circuits of loudspeaker of the invention, it is rational in infrastructure, by being embedded in a magnetosphere 5 again in T iron 1, and
Magnetosphere 5 uses neodymium iron boron magnetosphere, can effectively improve magnetic property, helps to lift loudspeaker parameters, moreover it is possible to ensures voice coil loudspeaker voice coil at a high speed
Operation is always maintained at vacant state, without contacting T iron axial wall, substantially prolongs the service life of voice coil loudspeaker voice coil；In addition, in the He of magnet steel 2
The periphery of magnetosphere 5 all wraps copper coil 6, has inductance effect, and copper coil 6 connects and composes two closures by wire and power supply 7
Loop, a regulation resistance is concatenated on each closed-loop path, resistance is changed by regulation resistance, with regard to that can change the electric current in loop
Size, and then magnetic field intensity is adjusted, adjusted using double loop, more, adjustable range is also bigger for the regulating effect of loudness of a sound；T
Heat conducting sleeve 15, thermally conductive sheet 16 and radiating fin 17 are set on iron 1, the windage heat energy caused by can high intensity be moved up and down
Radiating in time, help to lift the performance of loudspeaker.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent substitution or improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (8)
1. a kind of double regulation magnetic circuits of loudspeaker, including T iron (1), magnet steel (2) and upper conduction magnetic board (3), described magnet steel (2)
It is set in T iron (1), described upper conduction magnetic board (3) is fixed on described magnet steel (2) upper surface, it is characterised in that：Described
The periphery of magnet steel (2) is surrounded with the first copper coil of some circles (4), and magnetosphere is embedded with the center column (11) of described T iron (1)
(5), the periphery of described magnetosphere (5) is surrounded with the second copper coil of some circles (6), described the first copper coil (4) and the second bronze medal
The both ends of coil (6) connect and compose two closed-loop paths, described the first copper coil (4) and electricity by wire and power supply (7)
One first regulation resistance (8) is concatenated on the closed-loop path that source (7) is formed, described the second copper coil (6) is formed with power supply (7)
One second regulation resistance (9) is concatenated on closed-loop path.
A kind of 2. double regulation magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：The first described copper coil
(4) it is helically wound around magnet steel (2) periphery using copper wire to form, described the second copper coil (6) is helically wound around magnetic using copper wire
Circle (5) periphery forms, and described the first copper coil (4) is identical with the rotation direction of the second copper coil (6).
A kind of 3. double regulation magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：The center of described T iron (1)
A ring annular groove (12) is provided with cylinder (11), and an astragal ring recess (13) is provided with the periphery of annular groove (12), it is described
Magnetosphere (5) be inlaid in annular groove (12), described the second copper coil (6) be located at that coil groove (13) is interior, the second described bronze medal
The both ends of coil (6) pass from the lower magnetic conductive board (14) of T iron (1).
A kind of 4. double regulation magnetic circuits of loudspeaker as claimed in claim 3, it is characterised in that：Described annular groove (12) with
Coil groove (13) communicates, and is upper end open lower end closed, and the depth of described annular groove (12) is more than coil groove (13)
Depth, bottom and annular groove (12) tight fit of described magnetosphere (5).
5. the double regulation magnetic circuits of loudspeaker of one kind as described in any one in Claims 1-4, it is characterised in that：It is described
Magnetosphere (5) use neodymium iron boron magnetosphere.
A kind of 6. double regulation magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：The first described copper coil
(4) periphery is provided with magnetosheath (10), and described magnetosheath (10) is formed by upper magnetosheath (101) and lower magnetosheath (102) obvolvent, described
Upper magnetosheath (101) and lower magnetosheath (102) on offer the through hole (103) passed through for copper wire or wire.
A kind of 7. double regulation magnetic circuits of loudspeaker as claimed in claim 6, it is characterised in that：Described upper magnetosheath (101)
The equidistant circular row in lower end have some first card articles (104), the equidistant circular row in upper end of described lower magnetosheath (102) has some
Two card articles (105), described the first card article (104) and the second card article (105) interlaced setting, pass through the first card article (104)
The upper magnetosheath (101) of realization and lower magnetosheath (102) fit are tightly engaged with the second card article (105).
A kind of 8. double regulation magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：The center of described T iron (1)
To be hollow, heat conducting sleeve (15) is provided with the hollow inwall of T iron (1), is provided with the lower surface of T iron (1) and heat conducting sleeve (15)
Connected thermally conductive sheet (16), some radiating fins (17) are provided with described thermally conductive sheet (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710890152.7A CN107454532B (en) | 2017-09-27 | 2017-09-27 | Double-regulation loudspeaker magnetic circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710890152.7A CN107454532B (en) | 2017-09-27 | 2017-09-27 | Double-regulation loudspeaker magnetic circuit system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107454532A true CN107454532A (en) | 2017-12-08 |
| CN107454532B CN107454532B (en) | 2023-09-05 |
Family
ID=60497563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710890152.7A Active CN107454532B (en) | 2017-09-27 | 2017-09-27 | Double-regulation loudspeaker magnetic circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107454532B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160894A (en) * | 1996-05-28 | 2000-12-12 | Sony Corporation | Speaker apparatus and sound reproduction system employing same |
| US20060093180A1 (en) * | 2004-10-18 | 2006-05-04 | Seong Bae Kim | Magnetic circuit having dual magnets, speaker and vibration generating apparatus using the same |
| CN1819714A (en) * | 2005-12-29 | 2006-08-16 | 颜怀伟 | Lound speaker with double magnetic pole and moving coil, its playing and controlling circuit for radio communication apparatus |
| US20110182463A1 (en) * | 2010-01-22 | 2011-07-28 | Fortune Grand Technology Inc. | Ultra-thin loudspeaker |
| CN105187999A (en) * | 2015-08-07 | 2015-12-23 | 张志明 | Novel high-fidelity low-medium-high frequency loudspeaker with sensitive transient response |
| CN106231482A (en) * | 2016-08-12 | 2016-12-14 | 苏州秀转电子有限公司 | The vehicle audio of high cooling efficiency |
| CN106878888A (en) * | 2017-04-10 | 2017-06-20 | 张妍婷 | Induct dynamic speaker |
| CN206506706U (en) * | 2017-03-16 | 2017-09-19 | 吉林航盛电子有限公司 | A kind of magnetic circuit system and loudspeaker with Nd-Fe-B magnet steel |
-
2017
- 2017-09-27 CN CN201710890152.7A patent/CN107454532B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160894A (en) * | 1996-05-28 | 2000-12-12 | Sony Corporation | Speaker apparatus and sound reproduction system employing same |
| US20060093180A1 (en) * | 2004-10-18 | 2006-05-04 | Seong Bae Kim | Magnetic circuit having dual magnets, speaker and vibration generating apparatus using the same |
| CN1819714A (en) * | 2005-12-29 | 2006-08-16 | 颜怀伟 | Lound speaker with double magnetic pole and moving coil, its playing and controlling circuit for radio communication apparatus |
| US20110182463A1 (en) * | 2010-01-22 | 2011-07-28 | Fortune Grand Technology Inc. | Ultra-thin loudspeaker |
| CN105187999A (en) * | 2015-08-07 | 2015-12-23 | 张志明 | Novel high-fidelity low-medium-high frequency loudspeaker with sensitive transient response |
| CN106231482A (en) * | 2016-08-12 | 2016-12-14 | 苏州秀转电子有限公司 | The vehicle audio of high cooling efficiency |
| CN206506706U (en) * | 2017-03-16 | 2017-09-19 | 吉林航盛电子有限公司 | A kind of magnetic circuit system and loudspeaker with Nd-Fe-B magnet steel |
| CN106878888A (en) * | 2017-04-10 | 2017-06-20 | 张妍婷 | Induct dynamic speaker |
Non-Patent Citations (1)
| Title |
|---|
| 梁成义;: "一种推挽式电动扬声器的磁路音圈设计", 电声技术, no. 02, pages 31 - 32 * |
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| Publication number | Publication date |
|---|---|
| CN107454532B (en) | 2023-09-05 |
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Address after: 314300 Wanghai Street Industrial Park, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Jinlida Electronic Co.,Ltd. Country or region after: China Address before: 314300 Yuantong Street Industrial Park, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: JIAXING JINLIDA ELECTRON Co.,Ltd. Country or region before: China |