Headquarters locate in Hong Kong,  I t is a manufacturer and trading company group , Our group hold a professional car audio factory that offer car amplifier PCB designing,Pertain to embranchment companies JiangMen Rise State Industrial CO.,LTD It is a professional import and export trading company locating in JiangMen Guangdong China. Tunpo Electrical HK Co., Ltd. It is a car amplifier leading Supplier locating in HongKong, we have rich car amplifier design and prodution experience over 8 years, we have rich experience car amplifier design engineer, we welcome car amplifier OEM & ODM. Foshan Wellong auto accessory LTD It is a car audio, car accessory, fuel saver, design and sales company face to Chinese market.