The story
OCI was founded by Lee Hoi-rim as Oriental Chemical Industries in 1959. OCI was the first company to establish a soda ash factory and boosted the alkali industry in South Korea. In 2001, Oriental Chemical Industries merged with Korea Steel Chemical and changed its name to DC Chemical. However, after eight years, DC Chemical was reverted to OCI with the acronym of its original name. The new name, OCI, was given a new meaning as "The Origin of Chemical Innovation," replacing its original expansion, "Oriental Chemical Industries."
From Wikipedia’s article on OCI (company), shared under CC BY-SA 4.0.6