| LONGEN LIMITED | Private company limited by shares | Dissolved |
| HK LONGEN TRADE CO., LIMITED | Private company limited by shares | Live |
| HONG KONG LONGEN INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| LONGEN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| LONGEN INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| LONGEND LIMITED | Private company limited by shares | Dissolved |
| LONGENECKER COMPANY LIMITED | Private company limited by shares | Dissolved |
| Long-energy International Limited | Private company limited by shares | Live |
| Longenesis Limited | Private company limited by shares | Live |
| LONGENT LIMITED | Private company limited by shares | Dissolved |