CN202334867U - Moving iron type microphone unit for bone-conduction hearing aid and loudspeaker - Google Patents
Moving iron type microphone unit for bone-conduction hearing aid and loudspeaker Download PDFInfo
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- CN202334867U CN202334867U CN 201120360876 CN201120360876U CN202334867U CN 202334867 U CN202334867 U CN 202334867U CN 201120360876 CN201120360876 CN 201120360876 CN 201120360876 U CN201120360876 U CN 201120360876U CN 202334867 U CN202334867 U CN 202334867U
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- bone conduction
- hearing aids
- iron microphone
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Abstract
The utility model discloses a moving iron type microphone unit for a bone-conduction hearing aid and a loudspeaker, which has an improved structure and comprises an electromagnetic shielding shell, an armature, a diaphragm, a vibration conducting device, a magnetic iron core, a magnet sheet and an electromagnetic induction coil, and is characterized in that: the armature, the magnetic iron core, the magnetic sheet and the electromagnetic induction coil are connected to form a driving magnet mechanism, wherein the driving magnet mechanism is combined with the diaphragm fixed to the inner wall of the electromagnetic shielding shell and then is in transmission connection with the electromagnetic shielding shell by the vibration conducting device, thereby forming an electroacoustic transduction system. The moving iron type microphone unit for bone-conduction hearing aid and loudspeaker at least has the advantages that: the driving magnet mechanism is designed as a part of the diaphragm by utilizing the mass of the driving magnet mechanism on the premise of ensuring the tone quality, thereby simplifying weight increasing modules positioned outside the traditional diaphragm, optimizing the structure of the product and increasing the manufacturability of the product; by adopting the innovative driving magnet mechanism and diaphragm design, the mechanical structure of the product is optimized effectively; and the utilization rate of the space of the product is increased, so the structure is more impact and former.
Description
Technical field
The utility model relates to a kind of loudspeaker arrangement, and particularly a kind of moving-iron microphone unit that is applied in little shape loudspeaker arrangement such as bone conduction formula hearing aids belongs to electroacoustics and micromachine and learns the field.
Background technology
Moving-iron microphone unit has in the market generally adopted the basic principle of electromagnetic conversion; During work; Pass through magnetic induction coil with ac current signal; Coil-induced magnetisation, the balanced armature that is opposite to coil middle part carries out magnetic (utmost point) and changes, and the balanced armature of being changed by magnetic (utmost point) is then according to the principle up-down vibration in two permanent magnets with (utmost point) property is repelled each other, different (utmost point) property is inhaled mutually.Should move the sounding vibrating diaphragm of iron unit, be connected on the balanced armature, in the armature up-down vibration, also drive the vibrating diaphragm up-down vibration, and therefore agitate the air in the earphone cavity, thereby sound by a metal drive link.But in order to be applied in bone conduction formula hearing aids and the relevant loudspeaker arrangement, existing moving-iron microphone must be extra installs the weightening finish module that has certain mass additional on its vibrating diaphragm, and what this way was general exists the manufacturing process difficulty bigger; Product qualified rate is low; Cost is higher, and must extra additional zero parts because of it, causes product structure complicated; Cause product can't miniaturization etc. deficiency, demand urgently improving.
Summary of the invention
The purpose of the utility model is intended to propose a kind of structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement that has; It has adopted the Design of Mechanical Structure of optimizing, and the functional and property the made defective that can effectively avoid extra interpolation vibrating diaphragm weightening finish module to bring is simplified product structure; Improve product manufacturability; Reduce cost, widened its range of application simultaneously, strengthened the market competitiveness of Related product.
For realizing the foregoing invention purpose, the utility model has adopted following technical scheme:
A kind of have a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement, comprises that several parts of the armature, vibrating diaphragm, conduct vibrations device, conducting magnet core, flat thin magnet, the electromagnetic induction coil that are arranged in the electromagnetic shielding shell form.
Further; Said armature, conducting magnet core, flat thin magnet and electromagnetic induction coil are fixedly connected by resistance, laser or the ultrasonic bonding mode with the adhesive bonding; Form magnet mechanism; Conducting magnet core in the said magnet mechanism is fixedly connected with said vibrating diaphragm, and the armature in the said magnet mechanism is fixedly connected with an end of said conduct vibrations device, and said its other end of conduct vibrations device is fixedly connected with said electromagnetic shielding shell.Said electromagnetic shielding shell is provided with opening, is used for and being connected of said conduct vibrations device.
Preferably, said electromagnetic shielding shell is made by punching press, die-cut one-shot forming technique.
In addition, with on the airtight inwall that is fixed in said electromagnetic shielding shell of adhesive, constitute from the electric energy to magnetic energy again energy converting system jointly around the said vibrating diaphragm to the also Zhongdao acoustic energy of mechanical energy.
Further, said magnet mechanism also can select to place wherein any side of the both sides of said vibrating diaphragm according to the different size of moving iron microphone product and frequency response demand.
Last, said electromagnetic shielding shell external form can be designed to (but being not limited only to) according to different user demands: rectangle, and square or circular.
Compared with prior art, the advantage of the utility model is:
(1) advantage of the utility model is at least: guaranteeing under the constant prerequisite of sound quality; Utilize the quality of magnet mechanism self; With its part as the sounding vibrating diaphragm in the moving-iron microphone that is used for bone conduction formula hearing aids and loudspeaker arrangement; Replace the weightening finish module that needs add separately on vibrating diaphragm in traditional microphone that identical similar application is arranged, simplified the structure of product greatly.
(2) based on the product structure after the improvement of the utility model, on the manufacturing process of relevant vibrating diaphragm, need not to re-use the weightening finish module of extra interpolation, simplified its production technology, promoted the manufacturability of product, reduced its production cost.
(3) the magnet mechanism in the utility model also can select to place wherein any side of the both sides cavity of said vibrating diaphragm according to the different size of moving iron microphone product and frequency response demand; Broken through mechanical dimension's restriction that traditional identical similar microphone product brings because of its labyrinth restriction; Mechanical dimension is more flexible and changeable, has greatly promoted the possibility that develops with the superminiature direction to miniature.
The flexible and changeable mechanical dimension of the product that (4) the utility model brought has also enriched the relevant frequency response that is used for the moving-iron microphone of bone conduction formula hearing aids and loudspeaker arrangement more and has selected; Widen its range of application, strengthened the market competitiveness of Related product.
Description of drawings
Fig. 1 is the existing moving-iron microphone unit section structural representation that is used for bone conduction formula hearing aids and loudspeaker arrangement;
Fig. 2 is the moving-iron microphone unit section structural representation that is used for bone conduction formula hearing aids and loudspeaker arrangement in the utility model one preferred embodiments;
Fig. 3 (a) is the cross-sectional view that moving-iron microphone unit magnet mechanism that the utility model is used for bone conduction formula hearing aids and loudspeaker arrangement places vibrating diaphragm A side (microphone back cavity);
Fig. 3 (b) is the cross-sectional view that moving-iron microphone unit magnet mechanism that the utility model is used for bone conduction formula hearing aids and loudspeaker arrangement places vibrating diaphragm B side (microphone ante-chamber);
Fig. 4 (a) is that the moving-iron microphone unit electromagnetic shielding shell external form that the utility model is used for bone conduction formula hearing aids and loudspeaker arrangement is the schematic top plan view of rectangle;
Fig. 4 (b) is that the moving-iron microphone unit electromagnetic shielding shell external form that the utility model is used for bone conduction formula hearing aids and loudspeaker arrangement is foursquare schematic top plan view;
Fig. 4 (c) is that the utility model is used for the schematic top plan view of the moving-iron microphone unit electromagnetic shielding shell external form of bone conduction formula hearing aids and loudspeaker arrangement for circle;
Each Reference numeral and indicated assembly thereof are respectively among the figure: 1-conduct vibrations device, 2-armature, 3-vibrating diaphragm, 4-conducting magnet core; The 5-flat thin magnet, 6-electromagnetic induction coil, 7-electromagnetic shielding shell, 8-magnetic induction coil holding wire; The 9-outlet sound mouth, 10-connector, 11-vibrating diaphragm weightening finish module.
Embodiment
Be further described below in conjunction with accompanying drawing and a preferred embodiment technical scheme the utility model.
Consult Fig. 2-4, this preferred embodiment relates to a kind of moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement through improvement design, its involving vibrations conduction device 1; Armature 2, vibrating diaphragm 3, conducting magnet core 4; Flat thin magnet 5, electromagnetic induction coil 6, electromagnetic shielding shell 7; Magnetic induction coil holding wire 8, outlet sound mouth 9, connector 10 is formed with vibrating diaphragm weightening finish module more than 11 parts.
Particularly; Armature 2, conducting magnet core 4, flat thin magnet 5 and electromagnetic induction coil 6 are fixedly connected by resistance, laser or the ultrasonic bonding mode with the adhesive bonding; Form magnet mechanism; Conducting magnet core 4 in this magnet mechanism is fixedly connected with vibrating diaphragm 3, and the armature 2 in this magnet mechanism then is fixedly connected with an end of conduct vibrations device 1, and conduct vibrations device 1 is fixedly connected with electromagnetic shielding shell 7 by its other end.This electromagnetic shielding shell 7 is provided with opening 10, is used for and being connected of conduct vibrations device 1.
In addition, with on the airtight inwall that is fixed in electromagnetic shielding shell 7 of adhesive, constitute from the electric energy to magnetic energy again energy converting system jointly around the vibrating diaphragm 3 to the also Zhongdao acoustic energy of mechanical energy.
When this moving-iron microphone cell operation; Ac signal can be imported into by the outer electromagnetic induction coil holding wire 8 of the signal wire slots that is exposed to electromagnetic shielding shell 7; Thereby through electromagnetic induction coil 6, and produce electromagnetic induction effect and the alternating magnetic field of inducting thus, alternating magnetic field can magnetize the armature 2 that places electromagnetic induction coil 6, conducting magnet core 4 and flat thin magnet 5; Armature 2 can be according to homopolar-repulsion; Push-and-pull actions take place in the principle that heteropole is inhaled mutually and flat thin magnet 5, thereby the direction that drives conduct vibrations device 1 edge that is fixedly connected on the armature 2 and armature 2 quadratures produces vibration displacement, when vibration displacement propagates into via connector 10 with electromagnetic shielding shell 7 that the other end of conduct vibrations device 1 is fixedly connected; Its opposition can be along 1 passback of conduct vibrations device; Promote the magnet mechanism generation vibration displacement that armature 2, conducting magnet core 4, flat thin magnet 5 and electromagnetic induction coil 6 are formed, thereby drive the vibrating diaphragm 3 that is attached thereto, vibrating diaphragm 3 is vibrated by driving and generating; Drive the vibration of its ambient air and produce voice signal and sound by the outlet sound mouth 9 that places electromagnetic shielding shell 7 front ends, accomplish by electric energy to magnetic energy again to mechanical energy finally to the transduction efficiency of acoustic energy.
The utility model is guaranteeing under the constant prerequisite of sound quality; Utilize the quality of magnet mechanism self; With its part as the sounding vibrating diaphragm in the moving-iron microphone that is used for bone conduction formula hearing aids and loudspeaker arrangement; Replace the weightening finish module that needs add separately on vibrating diaphragm in traditional microphone that identical similar application is arranged, simplified the structure of product greatly; Based on the product structure after the improvement of the utility model, on the manufacturing process of relevant vibrating diaphragm, need not to re-use the weightening finish module of extra interpolation, simplified its production technology, promoted the manufacturability of product, reduced its production cost; In addition; Magnet mechanism in the utility model also can select to place wherein any side of the both sides cavity of said vibrating diaphragm according to the different size of moving iron microphone product and frequency response demand; Broken through mechanical dimension's restriction that traditional identical similar microphone product brings because of its labyrinth restriction; Mechanical dimension is more flexible and changeable, has greatly promoted the possibility that develops with the superminiature direction to miniature; Simultaneously, mechanical dimension flexible and changeable also enriched the relevant frequency response selection that is used for the moving-iron microphone of bone conduction formula hearing aids and loudspeaker arrangement more, widened its range of application, strengthened the market competitiveness of Related product.
More than purpose, technical scheme and the beneficial effect of the utility model carried out further explain; Institute is understood that; The preferred embodiment that the above is merely the utility model is not limited to the utility model, and is all within the spirit and principle of the utility model; Any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (10)
1. one kind has the structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement; Comprise several parts compositions of the armature, vibrating diaphragm, conduct vibrations device, conducting magnet core, flat thin magnet, the electromagnetic induction coil that are arranged in the electromagnetic shielding shell; It is characterized in that: said armature, conducting magnet core, flat thin magnet and electromagnetic induction coil are fixedly connected by resistance, laser or the ultrasonic bonding mode with the adhesive bonding; Form magnet mechanism, the conducting magnet core in the said magnet mechanism is fixedly connected with said vibrating diaphragm.
2. according to claim 1 have a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement, it is characterized in that, the armature in the said magnet mechanism is fixedly connected with an end of said conduct vibrations device.
3. according to claim 1 and 2 have a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement, it is characterized in that said its other end of conduct vibrations device is fixedly connected with said electromagnetic shielding shell.
4. describedly have a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement according to claim 1 or 3, it is characterized in that, said vibrating diaphragm is around it on airtight inwall that is fixed in said electromagnetic shielding shell.
5. according to claim 1 and 2 have a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement; It is characterized in that said magnet mechanism also can select to place wherein any side of the both sides cavity of said vibrating diaphragm according to the different size of moving iron microphone product and frequency response demand.
6. describedly has a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement according to claim 1 or 3 or 4; It is characterized in that; The said electromagnetic shielding shell external form that said moving iron microphone unit uses can be designed to according to different user demands: rectangle, and square or circular.
7. describedly has a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement according to claim 1 or 4 or 5; It is characterized in that the connected mode described in the said moving iron microphone unit between vibrating diaphragm and the magnet mechanism is the adhesive bonding.
8. describedly has a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement according to claim 1 or 3; It is characterized in that the connected mode described in the said moving iron microphone unit between conduct vibrations device and the electromagnetic shielding shell is that resistance, laser or ultrasonic bonding add adhesive and be tightly connected.
9. according to claim 8 have a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement; It is characterized in that; The electromagnetic shielding shell is provided with opening described in the said moving iron microphone unit, be used for said conduct vibrations device between be connected.
10. according to claim 9 have a structure improved moving iron microphone unit that is used for bone conduction formula hearing aids and loudspeaker arrangement; It is characterized in that electromagnetic shielding shell described in the said moving iron microphone unit is that a punching press, punching molding technology are processed together with its above opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120360876 CN202334867U (en) | 2011-09-23 | 2011-09-23 | Moving iron type microphone unit for bone-conduction hearing aid and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120360876 CN202334867U (en) | 2011-09-23 | 2011-09-23 | Moving iron type microphone unit for bone-conduction hearing aid and loudspeaker |
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| Publication Number | Publication Date |
|---|---|
| CN202334867U true CN202334867U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120360876 Expired - Lifetime CN202334867U (en) | 2011-09-23 | 2011-09-23 | Moving iron type microphone unit for bone-conduction hearing aid and loudspeaker |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024647A (en) * | 2011-09-23 | 2013-04-03 | 苏州恒听电子有限公司 | Moving iron type microphone unit for bone-conduction hearing aid and loudspeaker |
| CN103051996A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Bone conduction receiver with integrated diaphragm |
| CN103052006A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Diaphragm with function for improving medium and high frequency sounding and preparation method thereof |
| CN103052014A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Embedded bone conduction receiver |
| CN103067832A (en) * | 2012-12-25 | 2013-04-24 | 苏州恒听电子有限公司 | Structure-improved bone-conduction receiver |
| CN103079132A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Telephone receiver used for low-frequency compensation |
| CN103079151A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Novel bone conduction type telephone receiver |
| CN103079153A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Sounding unit with novel shielding case |
| CN103167390A (en) * | 2013-04-09 | 2013-06-19 | 苏州恒听电子有限公司 | Bone conduction receiver with air conduction effect |
| CN103200481A (en) * | 2013-04-09 | 2013-07-10 | 苏州恒听电子有限公司 | Multi-unit bone conduction type earphone |
| CN103220609A (en) * | 2013-03-26 | 2013-07-24 | 苏州恒听电子有限公司 | Magnetic driving mechanism for balanced armature telephone receiver |
| CN103731773A (en) * | 2013-12-27 | 2014-04-16 | 苏州恒听电子有限公司 | Flux leakage prevention electromagnetic shielding shell and closing method |
| CN103747397A (en) * | 2013-12-20 | 2014-04-23 | 汉得利（常州）电子有限公司 | Miniature moving-iron bone conduction driving device |
| CN103747381A (en) * | 2013-12-27 | 2014-04-23 | 苏州恒听电子有限公司 | A bone-conducting receiver with an improved driving structure |
| CN104540082A (en) * | 2014-12-31 | 2015-04-22 | 苏州恒听电子有限公司 | Telephone receiver of novel structure |
| CN103024647B (en) * | 2011-09-23 | 2016-12-14 | 苏州恒听电子有限公司 | Moving-iron microphone unit for bone conduction type sonifer and loudspeaker arrangement |
| CN106303864A (en) * | 2016-10-09 | 2017-01-04 | 苏州倍声声学技术有限公司 | Novel bone conduction microphone |
| CN106385657A (en) * | 2016-08-31 | 2017-02-08 | 苏州倍声声学技术有限公司 | Moving iron loudspeaker |
| CN108347681A (en) * | 2018-03-20 | 2018-07-31 | 深圳倍声声学技术有限公司 | A kind of armature structure and dynamic iron unit |
| CN108668211A (en) * | 2017-04-01 | 2018-10-16 | 李培胜 | A kind of no magnetic leakage vertical coil receiver motor |
-
2011
- 2011-09-23 CN CN 201120360876 patent/CN202334867U/en not_active Expired - Lifetime
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024647A (en) * | 2011-09-23 | 2013-04-03 | 苏州恒听电子有限公司 | Moving iron type microphone unit for bone-conduction hearing aid and loudspeaker |
| CN103024647B (en) * | 2011-09-23 | 2016-12-14 | 苏州恒听电子有限公司 | Moving-iron microphone unit for bone conduction type sonifer and loudspeaker arrangement |
| CN103079153B (en) * | 2012-12-25 | 2016-05-04 | 苏州恒听电子有限公司 | A kind of phonation unit with Novel shielding shell |
| CN103079132B (en) * | 2012-12-25 | 2015-09-02 | 苏州恒听电子有限公司 | A kind of receiver for low-frequency compensation |
| CN103067832A (en) * | 2012-12-25 | 2013-04-24 | 苏州恒听电子有限公司 | Structure-improved bone-conduction receiver |
| CN103079132A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Telephone receiver used for low-frequency compensation |
| CN103079151A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Novel bone conduction type telephone receiver |
| CN103079153A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Sounding unit with novel shielding case |
| CN103052014A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Embedded bone conduction receiver |
| CN103051996A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Bone conduction receiver with integrated diaphragm |
| CN103052006A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Diaphragm with function for improving medium and high frequency sounding and preparation method thereof |
| CN103052006B (en) * | 2012-12-25 | 2016-04-13 | 苏州恒听电子有限公司 | A kind of have vibrating diaphragm improving medium-high frequency function of pronunciation and preparation method thereof |
| CN103051996B (en) * | 2012-12-25 | 2016-01-20 | 苏州恒听电子有限公司 | A kind of bone conduction receiver with integral type vibrating diaphragm |
| CN103220609B (en) * | 2013-03-26 | 2016-12-28 | 苏州恒听电子有限公司 | A kind of magnetic driving mechanism of balanced armature formula receiver |
| CN103220609A (en) * | 2013-03-26 | 2013-07-24 | 苏州恒听电子有限公司 | Magnetic driving mechanism for balanced armature telephone receiver |
| CN103167390A (en) * | 2013-04-09 | 2013-06-19 | 苏州恒听电子有限公司 | Bone conduction receiver with air conduction effect |
| CN103200481A (en) * | 2013-04-09 | 2013-07-10 | 苏州恒听电子有限公司 | Multi-unit bone conduction type earphone |
| CN103747397A (en) * | 2013-12-20 | 2014-04-23 | 汉得利（常州）电子有限公司 | Miniature moving-iron bone conduction driving device |
| CN103747381B (en) * | 2013-12-27 | 2018-05-04 | 苏州逸巛声学科技有限公司 | Osteoacusis formula receiver with modified driving structure |
| CN103731773A (en) * | 2013-12-27 | 2014-04-16 | 苏州恒听电子有限公司 | Flux leakage prevention electromagnetic shielding shell and closing method |
| CN103747381A (en) * | 2013-12-27 | 2014-04-23 | 苏州恒听电子有限公司 | A bone-conducting receiver with an improved driving structure |
| CN104540082A (en) * | 2014-12-31 | 2015-04-22 | 苏州恒听电子有限公司 | Telephone receiver of novel structure |
| CN106385657A (en) * | 2016-08-31 | 2017-02-08 | 苏州倍声声学技术有限公司 | Moving iron loudspeaker |
| CN106303864A (en) * | 2016-10-09 | 2017-01-04 | 苏州倍声声学技术有限公司 | Novel bone conduction microphone |
| CN108668211A (en) * | 2017-04-01 | 2018-10-16 | 李培胜 | A kind of no magnetic leakage vertical coil receiver motor |
| CN108347681A (en) * | 2018-03-20 | 2018-07-31 | 深圳倍声声学技术有限公司 | A kind of armature structure and dynamic iron unit |
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Effective date of registration: 20170203 Address after: The front road 215000 in Jiangsu province Suzhou city high tech Development Zone No. 299 Building 1 Patentee after: Suzhou Puliansi Electronic Technology Co., Ltd. Address before: High tech Zone Suzhou city Jiangsu province 215011 Chuk Yuen Road No. 209 Patentee before: Suzhou Hengting Electronic Co., Ltd. |
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Effective date of registration: 20170324 Address after: Song Ling Zhen Wujiang District of Suzhou City, Jiangsu province 215299 Suzhou River Road No. 18 Patentee after: Suzhou Yi Acoustic Technology Co. Ltd.. Address before: The front road 215000 in Jiangsu province Suzhou city high tech Development Zone No. 299 Building 1 Patentee before: Suzhou Puliansi Electronic Technology Co., Ltd. |
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