The mollusc shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca, which includes snails, clams, tusk shells, and several other classes.
Showa Shell Sekiyu K.K. was a Japanese company that operated as a subsidiary of Royal Dutch Shell until it was acquired by Idemitsu Kosan in 2018 and integrated into the company the following year.
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