We enclose a copy of product catalogue with detailed specification. 随函寄上带有详细规格的产品目录一份。

Thanks. 谢谢。 

Please tell me how to contact it. 请告诉我联系方式

Is there any agent of your company in China? If there is one, please tell me how to contact it. 请问贵公司的产品在中国有没有代理商，如果有请告诉我联系 方式。

I'll send it to your email. 我会把地址发到你的邮箱里。