Koryo Leather

Cosmo Chemical Co., Ltd., Daelim Industrial Co. Petrochemical Division, DC Chemical Co., Ltd., Donghae Gas Industrial Co., Ltd., Dongnam Chemical Ind., Ltd., Hanwha Chemical Corporation, Hanwha L&C Corporation, Hyosung Chemical Performance Group, Isu Chemical, Korea Kumho Petrochemical Co., Ltd.

Dr. Chung's Food Co., Ltd., Ilhwa, Jinro, Korea Yakult Inc., Orion Group, Taebong International Co., Ltd.

Electrical, Electronics, Machinery, Metalworks, Cera E and C Co.,Ltd., Duk Shin Precision Mfg. Co., Ltd., Jun Tech Co., Korea Aerospace Industries, Ltd., NK Co., Ltd., Siemens Korea, Sina Optical Co., Ltd., Tae Sung Heavy Equipment Co., Ltd., Winiamando Inc.

FITI Fabric Testing and Research Institute, Woo-Seoung Textile Co., Ltd.