Kolon Industries (코오롱인더스트리, formerly known as KOLON Corporation) is a company specializing in the development and manufacturing of industrial materials and chemical products.
Nan Ya Plastics Corporation (NPC, 南亞塑膠) is a company engaged in the manufacture and sale of plastic raw materials, chemical fibers, and petrochemical products.
OCI Company (OCI(주)) is a company that specializes in the export, import, and distribution of chemicals, chemical-related products, and green energy solutions.
The Kurita Group (also known as Kurita Water Industries, 栗田工業株式会社) is a company providing water treatment chemicals, water treatment facilities, and maintenance services.
Sumitomo Bakelite (住友ベークライト株式会社) is a company that manufactures and sells semiconductor materials, high-performance plastics, and quality-of-life solutions.