| HC (KASEI) COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASAHI KASEI LIMITED | Private company limited by shares | Dissolved |
| ASAHI KASEI LIMITED | Private company limited by shares | Live |
| KASEI ASIA LIMITED | Private company limited by shares | Dissolved |
| LAN BOWENS KASEI LIMITED | Private company limited by shares | Live |
| MAC Kasei Co., Limited | Private company limited by shares | Live |
| MAEDA KASEI CO., LIMITED | Private company limited by shares | Live |
| Kasei Commercial Institution Limited | Company limited by guarantee | Live |
| KASEI ELECTRONIC LIMITED | Private company limited by shares | Live |
| ASAHI KASEI FIBERS (H.K.) LIMITED | Private company limited by shares | Live |
| ASAHI KASEI TEXTILES (H.K.) LIMITED | Private company limited by shares | Live |
| EIKA KASEI (H.K.) CO., LIMITED | Private company limited by shares | Live |
| TEIJIN KASEI (HK) LIMITED | Private company limited by shares | Live |
| DAIICHI KASEI (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| DAIWA KASEI (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG KASEI COMPANY LIMITED | Private company limited by shares | Live |
| KASEI HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| SANRITSU KASEI HONG KONG CO., LIMITED | Private company limited by shares | Live |
| SHOW I KASEI HONG KONG LIMITED | Private company limited by shares | Dissolved |
| OHTA KASEI (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SANWA KASEI COMPANY LIMITED | Private company limited by shares | Live |
| TOHBE KASEI HONG KONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| NIHON KASEI HONGKONG LIMITED | Private company limited by shares | Dissolved |
| DAIWA KASEI KOGYO (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| MINORU KASEI HONG KONG CO., LIMITED | Private company limited by shares | Live |
| NITTHO KASEI CO., LIMITED | Private company limited by shares | Dissolved |
| KASEI PETROCHEMICAL INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| RYUSEKI KASEI CO., LIMITED | | Live |
| TOGAN KASEI COMPANY LIMITED | Private company limited by shares | Dissolved |
| Wakayama Kasei Company Limited | Private company limited by shares | Live |