| TongChang Trading Co., Limited | Private company limited by shares | Live |
| NINGBO TONGCHANG INDUSTRY & COMMERCE CO., LIMITED | Private company limited by shares | Dissolved |
| TONGCHANG ELECTRONIC LIMITED | Private company limited by shares | Live |
| HK TONGCHANG NEW ENERGY INVESTMENT LIMITED | Private company limited by shares | Live |
| TONGCHANG (H.K.) CO., LIMITED | Private company limited by shares | Live |
| TONGCHANG TRADING (HK) LIMITED | Private company limited by shares | Dissolved |
| HK TONGCHANG INVESTMENT LIMITED | Private company limited by shares | Live |
| TONGCHANGFA TRADE LIMITED | Private company limited by shares | Live |