Exchange 2003 Licensing shared between U.S. and China Location

Our company owns Microsoft Exchange 2003 Enterprise server as well as 250 client licenses. Our U.S. location uses less than 100 of those CALs. We are opening a facility in China. I thought about installing 2003 SBS when I setup their server but since I also have 5 or so licensed copies of 2003 STD server I was leaning in that direction. Can I legally install Exchange 2003 on their server and utilize 30 or so of my CALs for Exchange? Same company name, different address (country)

Thanks;