Sekisui Chemical Celebrates 70th Anniversary Sekisui Chemical Celebrates 70th Anniversary “70 years ago, on March 3, 1947, Sekisui was established with the aim of being a comprehensive plastics business. This was a new and innovative material in Japan at that time. Sekisui Chemical Celebrates 70th AnniversarySekisui Specialty Chemicals2021-04-12T18:11:02+00:00