Business Partners (in random order)

Main suppliers

• JFE Steel Corporation
• NIPPON STEEL CORPORATION
• Kobe Steel, Ltd.
• Pohang Iron & Steel Company Limited.
• China Steel Corporation

Main domestic trading companies

• Maruichi Kohan Ltd.
• Metal One Sumisho Tubular Products Co., Ltd.
• Toyota Tsusho Corporation
• Marubeni-Itochu Steel Inc.
• JFE SHOJI TRADE CORPORATION
• Shinsho Corporation
• Mitsui&Co.steel Ltd.
• SUMITOMO CORPORATION
• NIPPON STEEL TRADING CORPORATION
• KANEMATSU CORPORATION
• CANOX CORP.
• Nakagawa Steel Tube Ltd.
• Okinawa Maruichi Ltd.
• ITOCHU Metals Corporation

Main export trading companies

• Maruichi Kohan Ltd.
• Metal One Sumisho Tubular Products Co., Ltd.
• JFE SHOJI TRADE CORPORATION