Thank you very much for your prompt reply, rjohn123! Actually my boss also didn't tell me the details about this case, I guess he just need a email templete in English once he received some requests from overseas, he can pass the work to other team member. So I think your reply is very helpful, but could you kindly tell me how could we write the begining of the email, shall we write like this : Thank you for your email ? or other any sentenses? Because the client got our contact information from our overseas office. Thank you!