YOU SHOULD BE FRIENDLY!
首先當然要做好功課，足夠了解你的產品。 順便客人國家的一些信息，小習慣，飲食，文化等等。。。閑聊時不會冷場~~~
In fact, It is no big deal. You should be very familiar with your products and try to introduce them to your client particularly. One more thing, try to make your boss and client agree on a good price which is beneficial to both parties. Good Luck!!!
