How to value a foreign company traded in the US

Hi guys. So let's say I want to value a foreign company ,for example a Chinese company. But it is listed in the US. In this case: 1. when calculating beta, what benchmark would you use? 2. What risk-free rate would you use. Should I use the US treasury bond rate or the Chinese one? 3. The company is borrowing RMB from Chinese banks. Can I use these interest rates as my cost of debt?

Thanks guys!