1986 GEESEN Electronic CO., LTD. was established and main products were produced series of Audio. 1989 Developed with manufactured infrared ray RF stereo wireless earphone and wireless audio system 1992 Enlarge established ECEN Electronic Co. Ltd. Professional design produced wireless microphones series for the both consumers and professionals markets. 1995 Expand our business scope of developed Wireless Amplifier System series, wireless oral interpretation,wireless transmitters series. Several patent and adhere to various telecom regulations. 1999 Germany TUV ISO-9001 quality of patent are fully approved and worldwide telecom and safety regulations. 2001 Developed plastic and stee ... more