http://pastport.jp/user/chenzhuisolator ja-JP SHANGHAI CHENZHU INSTRUMENT CO., LTD was established in 2002, which originated from Shanghai automation instrument institute, has grown as a leading brand providing high quality protective product for your important asset in both Process Automation. 2021-08-11T09:59:26+0900 http://pastport.jp/user/chenzhuisolator/timeline/Shanghai%20Chenzhu%20Instrument%20Co.%2C%20Ltd. chenzhuisolator http://pastport.jp/user/chenzhuisolator/timeline/Shanghai%20Chenzhu%20Instrument%20Co.%2C%20Ltd.