Kao Corporation
Kawaguchi Chemical Industry Co.,Ltd.
KYODO CHEMICAL COMPANY LIMITED
Kurita Water Industries, Ltd.
ＫＨ Neochem Co., Ltd.
Koei Chemical Co., Ltd.
Sanshin Chemical Industry Co., Ltd.
Sanyo Chemical Industries, Ltd.
Sanyo Color Works, Ltd.
Shin-Etsu Chemical Co., Ltd.
Sumika Covestro Urethane Co., Ltd.
Sumitomo Chemical Co., Ltd.
Sumitomo Bakelite Co., Ltd.
Seiko chemical Co., Ltd.
Taiyo Kogyo Corporation
Taoka Chemical Co., Ltd.
Tayca Corporation
DIC Corporation
TOHO Chemical Industry Co.,Ltd.
Nikko Chemicals Co., Ltd.
Nippon Shokubai Co., Ltd.
Honeywell Japan Ltd.
HakusuiTech Co., Ltd.
HIEDA CHEMICAL INDUSTRIES Co., Ltd.
Fuji Pigment Co., Ltd.
PLASiST Co. Ltd.
Mikuni Color Ltd.
Mitsubishi Gas Chemical Company, Inc.
Lion Specialty Chemicals Co., Ltd.
Bara Chemical Co., Ltd.
Hanil Chemical Ind. Co., Ltd.
Miwon Specialty Chemical Co., Ltd.
SK CHEMICALS
SONGWON Industrial Group