它们提高了燃油经济性和车辆安全性、减轻车身重量，为客户提供了愉悦的驾驶体验和附加价值。
They improve fuel economy, make the vehicle more efficient, safer and lighter, ensure a pleasurable driving experience, and provide added value to the customer.
知识经济时代的化工产品，是技术含量高、附加价值高的产品。
Chemical products of this age are of high technicality and of high additional value.
知识经济时代的化工产品，是技术含量高、附加价值高的产品。
Chemical products of this age are of high technicality and of high additional value.
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