This is a brief history of Tosoh Corporation. It lists the highlights of Tosoh's distinguished 75 year history.

    1925 Founding of Tekkosha Co., Ltd. 1935 Founding of Toyo Soda Manufacturing Co., Ltd. 1936 Operation of Nanyo Manufacturing Complex began 1964 Opening of New York office (later became TOSOH USA, Inc. in 1979) 1968 Shin-Daikyowa Co., Ltd. established 1971 Operation of Yokkaichi Manufacturing Complex began 1975 Tekkosha Co., Ltd. was merged into Toyo Soda Manufacturing Electrolytic manganese dioxide production begins in Greece at TOSOH Hellas A.I.C. (formerly Tekkosha Hellas A.B.E.) 1976 PVC production in Indonesia begins (P.T. Standard Toyo Polymer) Founding of Amto International trading company in Amsterdam (later became TOSOH Europe B.V. in 1987) 1978 Ethylene amine production in the Netherlands (Delamine B.V.) begins Shin-Daikyowa merges with Chubu Chemical Co., and acquires styrene monomer plant 1979 TOSOH USA, Inc. established 1983 Tohoku Toso Chemical Co., Ltd. established 1985 Toso Electronics Co., Ltd. established, sputtered hard disk production begins 1986 PPS production begins at TOSOH Susteel 1987 Company name changed to TOSOH Corporation U.S. joint venture firm TosoHaas established for sale of chromatography materials Aspartame plant in the Netherlands (Holland Sweetener Company) completed 1988 Acquisition of Specialty Metals Division of Varian Associates now TOSOH SMD, Inc. TOSOH acquires equity interest in Industrial Resins (Malaysia) Sdn. Bhd. 1989 Founding of TOSOH America, Inc. Establishment of TOSOH Medics, Inc. Ownership of NSG USA, Inc. transferred to Tosoh Equity participation in Weiss Scientific Glass Blowing Co., Inc. 1990 TOSOH/Shin-Daikyowa merger TOSOH Belgium established Equity participation in Eurogenetics 1992 Establishment of Nippon Silica Glass Europe Equity participation in General Chemical (Soda Ash) Company 1993 TOSOH SMD completed a new focused factory Holland Sweetener Company quadrupled the capacity of their aspartame plant 1994 TOSOH Speciality Materials Co., Ltd. established Acquisition of outstanding equity in Eurogenetics N.V. Establishment of Philippine Resins Industries, Inc., a joint venture company of TOSOH, Mitsubishi Corporation, Bank of the Philippine Islands and Mabuhay Vinyl Corporation 1995 TOSOH SMD Korea, Ltd. established P.T. Satomo Indovyl Polymer established Acquisition of Cryco Quartz, Inc. and Cryco Twenty-Two, Inc. 1996 TOSOH SMD Singapore Pte. Ltd. established Equity participation in Taiyo Vinyl Corporation Completion of Tosoh's second VCM plant Opening of NSG Europe's factory in England 1997 Establishment of Tosoh SMD Taiwan, Ltd. 1998 Tosoh America relocates to Ohio 2000 Aqcuisition of 100% interest in Nippon Silica Glass Co., Ltd. Aqcuisition of 100% interest in Tosoh Akzo, now Tosoh Finechem. Buys Rohm and Haas 50% shareholdings in TosoHaas. Aquisition of Tosoh SET, Inc.