住友化学工業株式会社

1935	創業者　住友久吉　　現在地において住友化学工業所を創立硫化染料、ナフトール染料の製造開始 Established as Sumitomo Chemical Industry at present location by the founder Hisakichi Sumitomo, and began production of naphthol and sulfur dyes
1944	企業整備令発令で製造中止 Suspended operation following an industry restructuring order issued by the government
1946	製造再開　酸性染料製造開始 Resumed production and began production of acid dyes
1950	住友化学工業株式会社に改組 Incorporated as Sumitomo Chemical Industry Company Limited
1960	非繊維用酸性染料の開発 Developed acid dyes for non-textile application
1970	公害問題発生で対応に苦慮 Took measures to solve pollution problems
1985	創立５０周年海外メーカーに製造委託 Celebrated 50th anniversary and launched overseas toll manufacturing
2005	創立７０周年 Celebrated 70th anniversary
2015	創立８０周年 Celebrated 80th anniversary

住友化学工業株式会社のサイトです