求翻译：The Sino-foreign joint ventures should export their products and earn foreign exchange as much as possible to balance their foreign exchange income and expenditure. With a view to encouraging foreign investors to establish technology-intensive and knowledge-intensive joint ventures in China and bring in advanced technological processes, technology, equipment, materials and scientific management skills that suit China, some joint ventures may sell a part or most part of their products in China with the approval of relevant Chinese departments. The products are: (1) products which are produced with advanced equipment, technology and technological processes and are short in supply in China; (2) Products that can replace China’s traditional imports; (3) products that are better than their Chinese counterparts in terms of quality, property, varieties and specifications.是什么意思？

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