中译英 高分 麻烦帮我翻译一下下面的话~要通顺啊~我不要金山词霸翻译出来的 先谢谢了

An American importer of plastic products imported from China to a plastic cup, he through China council for the promotion of trade that a plastic products manufacturer, after discussions about its purchase the goods, the condition has increased purchase quantity achieved a discount of 5% off the prices in the conclusion of the contract, and the seller agrees with irrevocable letter of credit, in settled the terms of payment on delivery dates do after confirmed. After the talks, and invited him to visit Beijing next Monday afternoon contracts.

An American importers would like plastic products imported from China a number of plastic cups, he passed Trade Promotion Authority is aware of China, a manufacturer of plastic products, after their talks on the conditions for the purchase of these goods have been made to increase the number of the seller to buy discount 5 % of the price, and in order to reach a contract agreement with the seller made an irrevocable letter of credit, in t