Shell Shell HFC Alkali ADT II
Showa Shell USA K.K. was founded on January 1, 1985, with its headquarters in Tokyo. It is based on Showa Oil Co., Ltd. and Shell USA Oil Co., Ltd., and established the current company through merger. The predecessor of Showa Petroleum Co., Ltd. was established on August 78, 1942, through the merger of three companies: Yeshan Oil, Asahi Oil, and Shinjin Oil.
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