| OTEN CHARITABLE EDUCATION FUND LIMITED | Company limited by guarantee | Dissolved |
| OTEN TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| OTEN (HONG KONG) LIMITED | Private company limited by shares | Live |
| Oten Trans (Hong Kong) Company Limited | | Live |
| Otendo Electronics Limited | Private company limited by shares | Live |
| Hong Kong Otengxin Technology Co., Limited | | Live |
| OTENNLUX LIGHTING (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Otento Trading Co., Limited | Private company limited by shares | Live |