對您的大力協助，我謹代表北京市政府表示衷心的感謝。 on behalf of the beijing municipal government, i wish to express our heartfelt thanks to you for your gracious assistance.
在北京過得怎麼樣？ how are you making out in beijing?
我一定向他轉達您的問候和邀請。 i'll surely remember you and your invitation to him.
歡迎美商來北京投資。 american businessmen are welcome to make investment in beijing.
歡迎多提寶貴意見。 your valuable advice is most welcome.
不虛此行! it's a rewarding trip!