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Parent Co***ny-Wenzhou changjiang automobile electrical appliance Co.ltd is a integrated R&D production and sales in manufacturing.it's a nominated supplier for GM, VW, FAW-VW, Chang-an Ford, Beijing Hyundai, FAW car, Chery, and Hafei Group Etc. sub-co***ny Shanghai zhongchangjiang Telecom TECH in Shanghai. our anti-radiation earphones are refinedly designed with its special acoustic channel technolgoy. we have obtained the Germany patent, Chinese invention patent, Australia Standard patent, American Invent...
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