Tianjin Longcheng Automation Instrument Co., Ltd. was built in 1997. We specialize in researching, designing and producing electric actuators and relative instrument as a professional manufacturer enjoys high honor in China. We attained ISO9001:2000 international quality system certification in 2004 and we passed the evaluation of Great Wall (Tianjin) Quality Assurance Certification in 2005. And we have obtained the ISO9001:2008 international quality system certification already in 2009. We have a number of advanced processing equipment, and a full set of testing and experiment equipment of...