Exhibit 8.1
Principal Subsidiaries of the Registrant
| Principal Subsidiaries | Place of Incorporation | |
| Kang Fu International Medical Co., Limited | Hong Kong | |
| Yangzhou Huada Medical Device Co., Ltd. | P.R. C. | |
| Jiangsu Yada Technology Group Co., Ltd. | P.R.C. | |
| Jiangsu Huadong Medical Device Industrial Co., Ltd. (“JH”) | P.R.C. | |
| Hainan Ruiying Technology Co., Ltd. (51% owned by JH) | P.R.C. | |
| Meihua Future Manufacturing Limited | New York, U.S. |