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![]() Shenzhen Marquess Electronics Co., Ltd. was founded in July 2004, originating from the Japanese AOI Electric Motor Manufacturing Company as a joint venture specializing in the production of ECM (Electret Condenser Microphones). For 21 years, we have been dedicated to the production, research, sales, and service of noise-canceling direct microphones and microphone cores, demonstrating unique AOI expertise in both active and passive noise reduction fields. Our Factory The company's production equipment and technical processes are all introduce... [Details] |