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2010 - establishment of Xiamen COSO Electrical Equipment Co., Ltd

2011 - Xiamen University cooperates to develop improved electroplating rectifier

2012 - 25th China International Surface Treatment Exhibition (Guangzhou)

2016 patent: R & D of high frequency DC rectifier

2017 patent: development of a high frequency rectifier with replacement device

2017 patent: research and development of high-precision rectifier based on LC type filter and controllable precise voltage regulator

2018 patent: research and development of water-cooled high frequency and low voltage rectifier

2018 patent: air cooled high frequency positive and negative pulse rectifier

2018 patent: water cooled high frequency positive and negative pulse rectifier

2018 Xiamen municipal high tech enterprise

2019 patent: double output positive and negative pulse rectifier

2019 - National high tech enterprise