Cosmo Oil Co., Ltd.

Daitoh Trading Co., Ltd.

Hanwa Co., Ltd.

Idemitsu Kosan Co., Ltd

Itochu Enex Co. ltd.

JXTG Nippon Oil & Energy Corporation

Kamei Corporation

Kanematsu Corporation

Kokurakosan Energy Co., Ltd.

Kygnus Sekiyu K.K.

Marubeni Corporation

Marubeni Energy Corporation

Mitsubishi Corporation

Mitsuuroko Energy Force Co., Ltd.

Nakagawa Bussan Co.,Ltd.

Okachi & Co., Ltd.

San-Ai Oil Co., Ltd.

Shell Japan Trading Ltd.

Showa Shell Sekiyu K.K.

Sinanen Co., Ltd.

Sojitz Corporation

Sogo Energy Corporation

Taiyo Oil Co., Ltd.

Toyo Energy Co., Ltd.

*As of Apr. '19  

 


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