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(As of the end of March, 2017)
1933 Aug Shinko Jinken Co., Ltd. established
1934 Dec Succeeded in the first spinning of rayon staple (production terminated in Dec. 1978)
1935 Jun Construction of Otake Plant (now Otake Production Center) completed
1942 Oct Shinko Jinken Co., Ltd. absorbed by Nippon Chemical Industries Co., Ltd.
1943 Oct Production of MMA monomer started
  Nov Production of SHINKOLITE-A acrylic sheet started; MMA Monomer business started
1944 May Nippon Chemical Industries Co., Ltd. merged with Asahi Glass Co., Ltd. and renamed Mitsubishi Chemical Industries Co., Ltd.
1950 Jun Shinko Rayon Co., Ltd. established as a result of breakup of Mitsubishi Chemical Industries Co., Ltd., which was split up into Nippon Chemical Industries Co., Ltd., Asahi Glass Co., Ltd. and Shinko Rayon Co., Ltd.
1952 Apr Production of ACRYPET acrylic molding material started
  Nov Otake Laboratories (now Production Technology Center.) established
  Dec Shinko Rayon Co., Ltd. renamed Mitsubishi Rayon Co., Ltd.
1956 Jul Ryoko Acetate Co., Ltd. (renamed Mitsubishi Acetate Co., Ltd. in Aug. 1958; absorbed by Mitsubishi Rayon Co., Ltd. in June 1989) established to commercialize acetate fiber business
1957 Dec Shinko Acrylic Fibers Co., Ltd. (renamed Mitsubishi Vonnel Co., Ltd. in Aug. 1958; absorbed by Mitsubishi Rayon Co., Ltd. in Aug. 1968) established to commercialize acrylic fiber business
1958 Jul Production of CAROLAN (now LYNDA) diacetate filament started
  Aug Toyama Plant (now Toyama Production Center) completed
1959 Jan Production of VONNEL wet-spun acrylic fiber started
1962 Sep Production of diacetate tow for cigarette filters started
  Oct Production of PYLEN polypropylene fiber started
1963 Nov Toyohashi Plant (now Toyohashi Production Center) completed
1965 Nov Made significant equity investment in Nitto Chemical Industry Co., Ltd., acquiring right to participate in the company's management
1967 May ABS resin business purchased from Nitto Chemical Industry Co., Ltd.
  Jun Production of SOALON triacetate fiber started
1968 Jun Shinko Esters Co., Ltd. (absorbed by Mitsubishi Rayon Co., Ltd. in Aug. 1973) established to commercialize polyester fiber business
1969 Oct Production of SOLUNA polyester fiber started (production of polyester filament yarn terminated in March 2010)
1970 Nov Production of ABS resin started
1971 Mar Production of METABLEN plastic modifier started
1975 Apr ESKA plastic optical fiber launched on market
  Aug Engineering Division spun off as Mitsubishi Rayon Engineering Co., Ltd.(Business transferred to Mitsubishi Chemical Engineering Corporation in October 2010)
1976 Apr Production of acrylic resin started at Toyama Plant (now Toyama Production Center)
  Aug Production of PYROFIL carbon fiber prepreg started
1980 Jun Production of polyolefin hollow fiber membranes started
1983 Feb MMA monomer production through isobutylene catalytic oxidation method started at Otake Production Center
  Feb Commercial operation of carbon fiber burning plant started at Otake Production Center
  Jun Mitsubishi Rayon America Inc. established
1984 Sep CLEANSUI household water purifier launched on market
1989 Sep Dianal America, Inc. established as an acrylic coating resin production and sales company
1990 Jan Operation of carbon fiber started at Toyohashi Production Center
  May Acquired Newport Adhesives and Composites, Inc. (U.S.A.) to produce and sell industrial adhesives and carbon fiber prepreg (integrated with Grafil and renamed Mitsubishi Rayon Carbone Fiber and Compsites, Inc in Apr. 2013)
1991 May Grafil, Inc. (U.S.A.) established to produce carbon fibers (integrated with Newport Adhesivesand Composites and renamed Mitsubishi Rayon Carbone Fiber and Compsites, Inc in Apr. 2013)
1994 May MRC Asia (Thailand) Ltd. established as a joint venture
1996 Dec Suzhou Sanyouli Chemicals Co., Ltd. (China) established as a joint venture to produce and sell butyl methacrylate monomer
1997 Jan Thai MMA Co., Ltd. established as a joint venture to produce and sell MMA monomer
  Apr MRC Hong Kong Co. Ltd. established
1998 Oct Took over Nitto Chemical Industry Co., Ltd., and transferred its operations to Yokohama Production Center, Hachinohe Factory and Yokohama Corporate Research Laboratories
2001 Jul Dia-Nitrix Co., Ltd., a joint venture with Mitsubishi Chemical Corp., established to produce and sell AN and its derivatives (absorbed by Mitsubishi Rayon Co., Ltd. in Apr. 2013)
  Sep Nantong Rayon Chemical Co., Ltd. (China) established as a joint venture to produce and sell acrylic molding materials (taken over by absorption-type merger by Mitsubishi Rayon Polymer Nantong Co., Ltd. in September 2009)
  Oct Mitsubishi Rayon Textile Co., Ltd. established to sell textile products (absorbed by Mitsubishi Rayon Co., Ltd. in Apr. 2016)
2002 Apr UMG ABS, Ltd., a joint venture with Ube Industries, Ltd. and General Electric Company, established to produce and sell ABS resin
  Dec Mitsubishi Rayon Polymer Nangtong Co., Ltd. (China) established to produce and sell MMA sheets
2003 Oct transferred Cleansui business to MRC Home Products Co., Ltd.(renamed Mitsubishi Rayon Cleansui Co., Ltd. in Apr. 2009)
2004 Mar Huizhou MMA Co., Ltd. (China) established to produce and sell MMA monomer
2005 Oct MRC Pylen Co., Ltd. was established to produce and sell polypropylene fiber. (absorbed by Mitsubishi Rayon Co., Ltd. in Apr. 2016)
2006 Jun DAESAN MMA Co., Ltd (Korea) established as a joint venture to produce and sell MMA monomer and MMA molding materials. (renamed LOTTE MRC in Jan. 2015)
2007 Apr Establishment of CSR Committee
2008 Nov Establishment of Mitsubishi Rayon (Shanghai) Co., Ltd.
2009 Feb Establishment of new Yokohama Corporate Research Laboratories (now Yokohama Research Laboratories)
  May Management integration with Lucite International Group Limited
2010 Mar Management integration with Mitsubishi Chemical Holdings Corporation
  Jul Water treatment business transferred from Mitsubishi Rayon Engineering Co., Ltd. to Mitsubishi Rayon Co., Ltd.
  Oct Business transferred from Mitsubishi Rayon Engineering Co., Ltd. to Mitsubishi Chemical Engineering Corporation.