Ltd. Chiba Plant Plastic optical fiber Tokyo Tokyo Chemicals Asahi Kasei Geotechnologies Co., Ltd. – Sale of industrial explosives Asahi Kasei Home Products Corp. – Development and sale of cling film and other household products Sun Delta Corp. – Sale of synthetic resin products Construction Materials Asahi Kasei Foundation Systems Co., Ltd. – Installation of piles Asahi Kasei Extech Corp. – Installation of exterior wall panels Services, Engineering Casanavi Co., Ltd. – Building and home fixtures e-marketplace and Others Sun Associates Co., Ltd. – Patent-related subcontracting Sun Trading Co., Ltd. – Sale of fibers, chemicals, and medical devices Asahi Kasei Create Co., Ltd. – Real estate brokerage, subcontracted office work Asahi Kasei Amidas Co., Ltd. – Personnel placement, agency and training; ISO consulting Asahi Kasei Ability Corp. – Printing, bookbinding, and office work Asahi Kasei Engineering Co., Ltd. – Plant, equipment, process engineering Sun Foods Co., Ltd. – Provision of employee meals Asahi Finance Co., Ltd. – Investment, finance Asahi Research Center Co., Ltd. – Information and analysis Asahi Kasei Benefits Management Corp. – Company housing, recreational facilities Asahi Kasei Trading Service Co., Ltd. – Sale of Asahi Kasei Group products Asahi Kasei Life Suppot Corp. Personal diet management system, etc.