AOS Electronics CO.., LTD is the Foreign Capital Enterprise inChina, InvestEd by Japan AOI Electronics CO.., LTD. It is One ofthe Specialized Manufacturing factories microphone.Weifang ããAOS has HiGE Production quality and efficiency as its equipmentsand technologies are Introduced from Japan.AOS have aState-of-the-art Anechoic Chamber and DENMARK B & KAudio-Frequency Analytical instrument.The Production can beFinished in the clean room. ããWe have supplied Our world-Famous Electronic Products tocompanies in China, Japan, Korea , HongKong, Europe and USAWe haveobtained the certification of ISO9001: 2000 in Jun 2002 to bestandard of quality assurance system.