About Us

Affiliated Companies in Japan・Overseas

Japan

■Tosoh Corporation
Advanced Materials Division, Electronic Materials, Quartz	Shiba Koen First Bldg., 3-8-2 Shiba, Minato-ku, Tokyo 105-8623, Japan TEL: +81-3-5427-5121 FAX: +81-3-5427-5200
■Tosoh Quartz Corporation	Wholly owned subsidiary of Tosoh Corporation
Tokyo Head Office – –	2-11-8, Shiba Daimon Minato-ku, Tokyo (Sumitomo Fudosan Shibadaimon 2-Chome Bldg. 5F), 105-0012, Japan TEL: +81-3-6453-0401（front desk） FAX: +81-3-6453-0180
Yamagata Head Office / Yamagata Factory –	3-1435 Tachiyagawa, Yamagata-shi, Yamagata 990-2251, Japan TEL: +81-23-686-2751 (front desk) FAX: +81-23-685-1003
Sakata Factory –	1-4-85 Ohama, Sakata-shi, Yamagata 998-0064, Japan TEL: +81-234-33-1011 (front desk) FAX: +81-234-33-1013
Yonezawa Factory –	1-1-20 Hachimanpara, Yonezawa-shi, Yamagata 992-1128, Japan TEL: +81-238-28-5001 (front desk) FAX: +81-238-28-1037
Tohoku Sales Office –	3F East Japan Bldg., 44 Mizusawa Nakamachi, Oshu-shi, Iwate 023-0813, Japan TEL: +81-197-34-0350 (front desk) FAX: +81-197-34-0351
Hokuriku Sales Office –	6F Toyama No. 2 Denki Bldg., 5-3 Shinsakuramachi, Toyama-shi, Toyama 930-0005, Japan TEL: +81-76-471-7259 (front desk) FAX: +81-76-471-7260

Overseas

■Tosoh USA, Inc. (CA Sales Office) Wholly owned subsidiary of Tosoh Corporation Location: San Francisco 6000 Shoreline Court Ste 101 South, San Francisco, CA 94080 USA TEL: Toll Free +1-888-799-0025 FAX: +1-650-210-4362 – – – – –

■Tosoh Quartz Korea Co., Ltd. Wholly owned subsidiary of Tosoh Quartz Corporation Location: Head Office / Factory 86, Gwahaksaneop-4ro, Ochang-eup, Cheongwon-gu Cheongju-si, Chungcheongbuk-do, South Korea TEL: +82-43-710-1000 FAX: +82-43-710-1050 Location: Seoul Sales Office Room No.1112-5, Yeoksam Heights Bldg., 151 Teheran-ro, Gangnam-gu, Seoul, South Korea TEL: +82-2-539-3881 FAX: +82-2-539-3882

■Tosoh Quartz Inc. Wholly owned subsidiary of Tosoh America Location: Portland 14380 NW Science Park Drive, Portland, Oregon 97229, USA TEL: +1-503-605-5600 FAX: +1-503-605-5656 – Location: Durham Unit 2 Greencroft Industrial Park, Stanley, County Durham, DH9 7YB, UK TEL: +44-1207-524400 FAX: +44-1207-524409

■Tosoh Quartz Co., Ltd. Wholly owned subsidiary of Tosoh Quartz Corporation Location: Headquarters / Tainan Factory No. 92, Da-Soong, 7th Road, Tainan-Science-Based Industrial Park, Hsin-She Shing, Tainan, Taiwan, R.O.C. TEL: +886-6-505-0860 FAX: +886-6-505-0704 Location: Hsinchu Sales Office 7F.-1, No.118, Ciyun Rd. East Dist., Hsinchu City 30072 Taiwan (R.O.C.) TEL: +886-3-577-1234 FAX: +886-3-578-2456