| Domiciled | British Virgin Islands |
| Registered Office Address | Unknown |
| Head Office Address | unknown |
| Owners (if known) | Wang Feng 100% |
| Directors (if known) | unknown |
According to an announcement filed by Birmingham Sports Holdings to the Stock Exchange of Hong Kong, Join Surplus International Ltd is a BVI company 100% owned by Wang Feng, a Chinese National. Join Surplus owns 2.70% of Birmingham Sports Holdings.
Filings from the Hong Kong Company Registry show that Join Surplus International Ltd owns 51% of Xinglong Business Management Co Ltd, a company registered in Hong Kong. That company lists Wang Feng and Gu Zhongfei as directors.
Details correct as of April 28, 2021