・U.S.A.(Detroit) Sumitomo Electric Carbide, Inc. 14496 Sheldon Road, Suite 230, Plymouth, MI 48170, U.S.A. Tel: +1-734-451-0200 Fax: +1-734-451-5338		・U.S.A.(Cincinnati) Sumitomo Electric Carbide, Inc. 4450 Carver Woods Drive, Cincinnati, OH 45242-5545, U.S.A. Tel: +1-513-891-4000 Fax: +1-513-794-2911
・U.S.A.(Alabama) Sumitomo Electric Carbide, Inc. 5650 Sanderson St., NW-Suite J Huntsville, AL 35805, U.S.A. Tel: +1-256-895-2845 Fax: +1-256-895-3150		・Mexico Sumitomo Electric Hardmetal de Mexico, S.A de C.V. Av. Universidad No. 1703-A, Fracc. Lomas del Campestre C.P. 20129, Aguascalientes, AGS., Mexico Tel: +52-449-993-2740 Fax: +52-449-993-2753