| Kam Yuk Feng Alkaline Soil Remediation Limited | Private company limited by shares | Dissolved |
| San'an Alkaline Soil Remediation Limited | Private company limited by shares | Live |
| Nelson Environmental Remediation (HK) Limited | Private company limited by shares | Live |
| ENVIRONMENTAL REMEDIATION CONSULTANT GROUP (NETHERLANDS) LIMITED | Private company limited by shares | Live |
| Science and Technology for Autism Remediation (STAR) Limited | Company limited by guarantee | Live |
| SITA LAND REMEDIATION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Global Soil Remediation Company Limited | Private company limited by shares | Live |
| REMEDIATION TECHNOLOGIES, LIMITED | Private company limited by shares | Dissolved |