| Hygrapha Safety Co., Limited | Private company limited by shares | Live |
| HYGRAPHA SAFETY HONG KONG LIMITED | Private company limited by shares | Live |
| HYGRAPHICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| HYGREEN CO., LIMITED | Private company limited by shares | Dissolved |
| HYGREEN ENERGY CO., LIMITED | Private company limited by shares | Live |
| HyGreen Energy Hong Kong Limited | | Live |
| HYGROPONICS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Hygrow Capital Limited | Private company limited by shares | Live |