YISON Electron Technology Co., Ltd specialized in the research, design, manufacture and export of earphones for 19 years. YISON have gained ISO9001 certification and our products have already been sold to the USA, France, Australia, Italy, Brazil, Turkey, Russia, Japan and other more than 30 countries and regions. YISON have more than 400 skilled and well-trained employees working in Dongguan factory. Based on advanced technology, modern equipment, strict production control and complete prod...
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