| China Thyroid Disease Medical Research Center Limited | Private company limited by shares | Live |
| HONG KONG THYROID ASSOCIATION LIMITED | Company limited by guarantee | Live |
| Hong Kong Scarless Thyroid Medical Center Limited | | Live |
| Hong Kong Thyroid and Endocrine Surgery Centre Limited | | Live |
| Hong Kong International Institute of Diabetes & Thyroid Diseases Limited | Private company limited by shares | Live |
| Hong Kong Global Thyroid Medical Research Institute Limited | | Live |
| HONG KONG THYROID SOCIETY LIMITED | Company limited by guarantee | Live |