| HK Yiyun Co., Limited | Private company limited by shares | Live |
| YIYUN Digital Co., Limited | Private company limited by shares | Live |
| YIYUN TRADE CO., LIMITED | Private company limited by shares | Live |
| HK YIYUN TRADE LIMITED | Private company limited by shares | Dissolved |
| YiYun Trading Limited | Private company limited by shares | Live |
| HK YIYUN TRADING LIMITED | Private company limited by shares | Live |
| YIYUNHENG GROUP LIMITED | Private company limited by shares | Live |
| YIYUNLU Industries Development Limited | Private company limited by shares | Live |
| Yiyunzhi International Trade (Hongkong) Co., Limited | Private company limited by shares | Live |