| SINMA (HK) CO., LIMITED | Private company limited by shares | Live |
| Sinma International Group Co., Limited | Private company limited by shares | Live |
| SINMA INVESTMENT, LIMITED | Private company limited by shares | Dissolved |
| SINMAC INVESTMENT LIMITED | Private company limited by shares | Live |
| SINMAC INTERNATIONAL TRADING CO LIMITED | Private company limited by shares | Live |
| SINMAG ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Sinmag Holding Limited | Private company limited by shares | Dissolved |
| SINMAH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Sinman Limited | | Live |
| SINMAR LIMITED | Private company limited by shares | Live |
| ITALY SINMAR LINOUR GROUP (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SINMAR (HONGKONG) ELECTRONIC CO., LIMITED | Private company limited by shares | Live |
| SINMART HONGKONG LIMITED | Private company limited by shares | Live Commenced dormancy on 10-May-2016 |
| SINMATAI TRADING (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINMAX COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINMAX LIMITED | Private company limited by shares | Live |
| SINMAX (H. K.) LIMITED | Private company limited by shares | Live |
| SINMAX INVESTMENT LIMITED | Private company limited by shares | Live |
| SINMAX PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| REGENT SINMAY LIMITED | Private company limited by shares | Dissolved |
| SINMAYA INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SINMAYER PTE LIMITED | | Live |