- Kobe Steel Ltd.
- Address:Shinko Building 10-26, Wakinohamacho 2-chome Chuo-ku, Kobe Hyogo 651-8585. Wakinohamacho Kobe Hyogo 87 Japan
- Yamasho Corporation, Inc.
- Address:15F TOKYO GINKO KYOKAI BLDG., 1-3-1 MARUNOUCHI, CHIYODA-KU, Tokyo 100-0005 Japan
- Daiichi Kankyo Kaihatsu Co.,Ltd.
- Address:3-19-11,Shinyokohama,Kouhoku-Ku Yokohama Kanagawa 230-0074 Japan
- Robin Enterprise Inc.
- Address:OSAKA OSAKA JAPAN 3-13-15 Japan
- Advantage Links Inc.
- Address:3F, Kawakami Bldg., 5-17-6 Hiroo Shibuya-ku Tokyo 1500012 Japan
- K.M.SEIKO CO.,LTD.
- Address:10-16, 1 chome,Yoshitahonmachi Higashi Osaka Osaka 578-0982 Japan
- Kohsei Co., Ltd. Kitakyushu Plant
- Address:1-109 Hibikimachi, Wakamatsu-ku, Kitakyusyu-shi Fukuoka 808-0021 Japan
- SEIKODO Boekisha Co., Ltd.
- Address:Ariake Frontier Building, Tower B, Level 9, 3-1-25 Ariake, Koto-ku Tokyo Japan
- KINSEI SANGYO CO., LTD
- Address:788 Yanaka-machi Takasaki City Gunma 370-120 Japan
- Beet Japan Ltd
- Address:shinagawa intercity towerA 2-15-1 tokyo Japan
- Tatsuta Industrial Co.,Ltd
- Address:2-17 Higashi-Shinsaibashi,1-Chome Osaka Osaka 542 Japan
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