The company was formerly known as member of Inoue Special Steel Co., Ltd. (ISS) China Quality Control Management Department established in 2006 and has 100-year history in Japan. It specializes in purchasing metal products (casting, machining, etc.) in China for its customers and major Japanese companies.

        In 2016, the ISS decided to restructure the activities. CQS has been in preparation by former employees of the Quality Control Department of ISS. CQS is a "young" but experimented company. CQS has therefore,  years of professional quality control management experience and also a large number of excellent supplier resources base in metal products.

         In 2018,   CQS-Dalian is operational and start helping worldwide customers to secure their projects in China. Our years experience make immediately the difference in numerous casting pats projects. Our success stories continue, just like our customers'.