Changzhou KOAS Corporation Co., Ltd. is a trading company based in Changzhou, Jiansu. Originally a liaison office for Kitagawa MFG Co., Ltd. and SAIMA Corporation Co., Ltd., it became the first trading company in Changzhou with 100% capital from Japan in 2006.

With a team of 30 employees, including office staff, QC staff, and inspectors, KOAS provides technical guidance and Japanese Quality Control advice to local product makers. They export 30% of their products to Japan and sell the remaining 70% domestically, with projected total sales of 25 million RMB in 2007.