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But the types of products that can be produced by only a few TARs, they must be high-end, and will get generous super-normal profit. 而那些只有個別技術先進區(qū)域才能生產(chǎn)的高端產(chǎn)品類別自然成為壟斷產(chǎn)品，可以享受長期的正超額利潤。