而后，中国铝型材的美国进口商需为评定的关税交付现金形式的定金或债券。
Importers of Chinese aluminum extrusions would then have to post cash deposit or bonds for the assessed duties.
以合格评定程序为代表的技术性贸易壁垒已经成为国际贸易中非关税壁垒的主要形式之一。
Technical barriers to trade, with conformity assessment procedures as the representative, have become the main form of non-tariff barriers in international trade.
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