Cooperative ventures
General agents in the past
- Japan KUREHA chemical industry Corporation
- The U.S.A. Rohm & Haas Company
General agents now
- Japan SANKYO LIFETECH Co., Ltd.
- SANKYO Organic Chemicals Co. Ltd.
Dealing manufacturers
- Matsushita Denko Chemical Co., Ltd. and Several famous manufacturers of plastic products in domestic and foreign countries. Several domestic food and medicine manufacturers.