Nippon Steel &

JFE HD

Kobe Steel

Hitachi Metals

Nisshin Steel

Daido Steel

Aichi Steel

Yodogawa Steel Works

Kyoei Steel

Yamato Kogyo

Sanyo Special Steel

Maruichi Steel

Nakayama Steel Works

Toyo Kohan

Nippon Yakin Kogyo

Mitsubishisteel MFG

Kurimoto

Godo Steel

Osaka Steel

Nippon Denko

Nippon Kinzoku

Tokyo Tekko

Mori Industries

Pacific Metals

Araya Industrial

Chubu steel plate

Nippon Koshuha Steel

Kawakin HD

Nippon Seisen

Envipro HD

Shinko Wire

Metalart

Nichia Steel Works

Chuo Malleable Iron

Kogi

Hokuetsu Metal

SNT

Sanyu

Nippon Chutetsukan

Nippon Chuzo

Asahi Kogyosha

Tohoku Steel

Powdertech

Takasago Tekko

Shinhokoku Steel

Daiwa Heavy Industry

Chuo Malleable Iron

Powdertech

Takasago tekko

Shinhokoku Steel