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2008年中口額為1.43萬億美元，再次超過美，成為球第二大口。在中大力發展對外貿易、擴大口的同時，越來越多地受到來自發達家，尤其是歐美家技術性貿易壁壘的影響。作為中主要的貿易伙伴和口市場，歐美家憑借其科技、環保等方面的優勢，使用各種技術性貿易壁壘成為制約中產品的口手段，給中的口貿易帶來巨大損失。

由于中的工程機械起步晚，發展快，些產品的質量、安、環保只是達到內的技術標準，卻沒有取得歐美發達家些行業協會的認證，這些工程機械在口的時候，必定會受到歐美家技術性貿易壁壘的影響。與此同時，在面對技術性貿易壁壘的時候，中還沒有建立貿易預警機制，不能及時而有效地制定和發布反應措施。對貿易伙伴的貿易政策和技術性貿易壁壘的變化沒有進行實時動態監控，這樣就會被動受到他們施加的無形影響。沒有積參與際標準化活動，努力使與本舊產業相關的技術標準轉化為際標準。沒有注建立區域標準化聯盟，形成協調致的際標準提案，以增強在際標準化組織中的影響力。沒有將技術性貿易壁壘與知識產權相結合。在金融危機面前，面對球經濟萎縮，歐美家在進行戰略保護的時候技術性貿易壁壘進步加強，給中工程機械的口貿易帶來巨大的挑戰和損失。