In last December, Vietnam customers interested in our products and send emails for products catalogue. Our sales manager reply email in a short time attached with price list. Customers particularly pointed that they want to build amusement park in Quang Ninh north of Vietnam. Then, we invited Vietnam customers to our factories and had a fieldwork. They visited our offices and factories, and then we began to talked about the details of amusement rides. We knew that they planned to build a 3000m2 amusement park. So our park designers and sales person came up with our scheme and recommend popular rides for both adults and children, which based on our experience. Later, customers suggest our colleagues to Vietnam and discuss the contract together. When our sales person arrived, Vietnam customers treated big meals and showed his companies. Finally, my colleagues drew up contracts and customers are satisfied with it. This case is rough and lasting, but our colleagues succeed, depending on competitive price and top class quality.