第一句：We want to develop direct contact with American buyers for ourselves.
我们想同美国的买主建立起直接的联系。
A: We want to develop direct contact with American buyers for ourselves.
我们想同美国的买主建立起直接的联系。
B: We see that your firm specializes in Light Industrial Goods, and we are willing to establish business relationship with you.
得知贵公司专门经营轻工业品，我们愿意与贵公司建立业务关系。
A: That's good. We are one of the largest importers of Electric Goods in this city, and we wish to establish business relationship with you.
那太好了。我们是本市最大的电器进口商之一，愿意与你们建立业务关系。
第二句：We'll try our best to widen our business relationship with you.
我们将尽力扩大同你们的贸易关系。
A: We'll try our best to widen our business relationship with you.
我们将尽力扩大同你们的贸易关系。
B: Thank you for all the arrangement.
感谢您的所有安排。
A: You are welcome. We believe the arrangement will contribute to cementing our pleasant relationship.
不用谢。我们相信这有利于巩固我们的良好关系。
其他表达法：
Our company is thinking of expanding its business relationship with China.
我公司想扩大与中国的贸易关系。
As is known, we set great score by the trade relationship with the Third World countries.
众所周知，我们十分重视同第三世界国家的贸易关系。