| SECCO CHINA CO., LIMITED | Private company limited by shares | Live |
| Secco HuiFeng Set Co., Limited | | Live |
| Secco Eko Technology Co., Limited | Private company limited by shares | Live |
| SECCO ELECTRONICS (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG SECCO RANGE COATING LIMITED | Private company limited by shares | Live |
| Secco Offshore Service (HongKong) Limited | Private company limited by shares | Live |
| SECCO EXS INTERNATIONAL (HONGKONG) LIMITED | Private company limited by shares | Live |
| SECCO ARCHITECTURAL SERVICES LIMITED | Private company limited by shares | Dissolved |
| Secco Technology Limited | Private company limited by shares | Live |