Dear Mr(MISS),

　　Being specialized in the trade of ……, we express our desire to trade with you in this line.

　　On the basis of equality, mutual benefit and the exchange of needed goods We are glad to invite you to interview our company and inspect the machine.

　　Please inform us of your itinerary so as to facilitate our arrangements in advance.

　　Please feel free to ask any question if there is anything you are particularly interested in.

　　Looking forward to your visit.

　　Faithfully,

　　YOUR NAME