✔ 最佳答案
sites like
http://finance.yahoo.com
http://finance.google.com
For example, 中國人壽 2628 ADR ticker symbol is LFC. You can search LFC in finance.yahoo.com to check ADR price trading in US.
If you want to lookup ticker symbol for ADR listed in US,
you can go to this website:
http://www.adrbny.com/dr_directory.jsp
I hope that helps.
參考: yahoo finance, google finance etc.