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 electric actuator. More than 90% of our electronic components are imported with original packing, and we do our best to ensure the quality of our full set of products tune to original ones overseas. On the basis of that and with hard work, our overall product quality can be compared with the original imported machines. Our main products are SH series intelligent model electric actuators, DKJ / DKZ / SKD electric actuators, ZAZP / ZKZN Series electric control valves, as well as DFD series electric operation implement and servo amplifier series instruments. We provide a special type and various non-standard products to meet your special control requirements. Our company is always tracking the latest technology in the industry, and the intelligent model electric actuators we are producing are with French technology. On the basis of original technology, we also add many functions for protection, such as over-current protection, electric brake, broken signal protection and limit position by analog signal of electricity.Please feel free to contact us for further information.