20分求翻译，很简单的

提请楼主注意，一楼是机器翻译。
以下为纯手工译文：
He wants to purchase about 20 sets of microscopes, which is the type we sold to them before. And I'm here asking for the possibility of the deal, if it is possible please contact him as soon as you can and prepare for the materials needed to quote price. Quote the price to me after that because he has already contacted the clients.
已经校对，基本无语法拼写错误。

He is intending to purchase about twenty sets of microscopes which are the same type with what we sold to them before. Is there any possibility to take over this deal? If possible, please contact him as soon as possible so as to ask required information and give me the quotation. By the way, he directly corresponded with the client before.

He'd like to buy about twenty microscopes ,as the same as which we sold to him last time,would you like to make a deal with him? If you want ,please contact with him as soon as possible for more information and give me an offer price ,as he has