Please correct the grammar in my homework.

Hi, I am doing my homework but it is really difficult for me. It is a kind of introduction letter of my fake business...

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I am pleased to write this letter to you and this is to introduce our company, HOMIGO International.

I have just started my business, however I had been worked as a marketing manager for 7 years. At that time, I was working with many companies and having enormous experiences at marketing. For a long time, I have researched the market for doing successful business. I found your products in web-site and it looks magnificent for us. I wish to distribute your high quality product if given an opportunity.

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