Abu Dhabi Oil Co., Ltd. Maruzen Oil Co., Ltd." `. r$ v$ @- r7 K
Castrol Mitsui Oil And Gas Co., Ltd.
( v: v# `, I" R. d; ]" @ Corning Mobilsekiyu Kabushiki Kaisha: W4 u/ l' l( L' J. m# v4 T
Cosmo Oil Co., Ltd. Nichigo Engineering
( N8 W& H% U- M7 T9 v5 c2 U$ y# u Esso Sekiyu K. K. Nippon Mitsubishi Oil Corporation9 H7 N" M0 m4 U/ l6 l3 ~
Exxonmobil Okinawa Sekiyu Seisei Company, Ltd.3 y3 B2 l) d* ]* ]$ E! w+ h
Fuji Kosan Co., Ltd. Seibu Oil Co., Ltd.; c* W2 x( x5 I/ F( q/ |: [8 m
General Sekiyu K. K. Showa Shell Sekiyu K.K.5 o& A+ C" w; ~. J3 i4 n& O8 a
Idemitsu Kosan Co., Ltd. Showa Yokkaichi Co.* W! M; ~. q, M+ i( \- q
Inpex Corporation Taiyo Oil Co., Ltd.! \- _9 b& |3 W+ I) Y# B
Japan Drilling Co., Ltd. Teikoku Oil Co., Ltd. Z1 x1 n/ H5 m* u
Japan Energy Co., Ltd. Toa Oil Co., Ltd.
, j2 k3 n) K* f- ^7 Z Japan Oil Development Co., Ltd. Tonen Corporation% s1 N& m8 y/ D O+ T7 U
Koa Oil Co., Ltd. UNOCAL(加州石油)( S8 w7 G0 p2 P4 I$ X. S
Kyushu Oil Company Limited Yushiro Chemical Industry Co., Ltd. |