能帮我指出下面这篇英语短文的语法错误吗?
Dear Sir or Madam,
We are glad to know your name and address on the Internet.We are interested in your product.We would like you to send us details of your various ranges,including sizes,colors and prices,and also samples of the different qualities of material used.
We take this opportunity to introduce ourselves to you as large dealers in product and believe there’s a promising market in our area for moderately priced goods of the kind mentioned.
If your prices and terms meet our requirements,we will be glad to start a business relationship with you.
Looking forward to receiving an early reply.