About us：We are an export trading company under CRRC,mainly selling couplers and PIS systems produced by CRRC Qingdao Sifang Rolling Stock Research Institute Co., Ltd ,CRRC Qingdao Sifang Rolling Stock Research Institute Co., Ltd (hereinafter referred to as CRRC SRI) was founded in 1959 and transformed from a scientific research institution into a company in 2000, which is affiliated with China CNR Corporation Limited. CRRC SRI becomes a wholly owned subsidiary of CRRC Corporation Limited in 2015 when China CNR Corporation Limited merged with China CSR Corporation Limited as CRRC. The company covers an area of more than 200 thousand square meters, where the headquarter located in Ruichang road Shibei district covers an area of 70 thousand square meters and the industrial park areas in Qingdao National High-tech Industrial Development Zone covers an area of 130 thousand square meters. The company’s registered capital is 1.29 billion Yuan.CRRC SRI will give full play to the technical advantages of mechatronics, and provide the customers with the cross system and cross domain system technology solutions. In order to provide the most valuable technologies and products for the society, CRRC SRI will take the customer's demand as the guidance and drive by the innovation, and strive to become a respected and valuable intellectual enterprise.