请帮我看一下我写的这几句话对不对。谢谢。

Thanks for your letter!I want to kown does your company have the CE certification.And could you give us a power of attorney to show your agreement that we can sale the production of your company in china to our coustomers!In addition,I want to kown the price of the PRT-130.Thank you!
你看下，满意就采纳,不满意就当参考吧!

Thank you for your mail. i wonder if your company has the CE certification .
and could you write a certificate of authorized distributor to me, it is used to shown that your company authorizes us to sale your products in China and let the customers know that your company agrees to let us sell your products.。In addition, I want to know the price of the PTR-130.

有一点错误，我改过了，如上

Thank you very much for your mail. I'd like to ask whether your company has the CE certification.
and could you write a certificate of authorized distributor for me, just for a prove to show to our customer if required. In addition, I'd like to know the price of PTR-130.

Thanks!