Both the US and the EC are enjoying relatively perfect trade barrier investigation legislation symbolized by Section 301 and TBR in addition to accumulating a wealth of experience in trade barrier investigation practice.

• 美国和欧共体以301条款和TBR为标志的贸易壁垒调查立法已经相对完善，在贸易壁垒调查实践方面也积累了丰富的经验。