以下为句子列表：
英文: The main products including Purple Star Saving Energy &Depollution Enhancer for Gasoline Internal-combustion Engine and Purple Star Automobile Tail-Gas Catalyzing Purifier won the Gold Medals in the patent exhibition fairs for many times.
中文: 该公司主要生产“紫星”牌系列环保节能产品，其中内燃机节能降污增力器、汽车尾气催化净化器等产品多次在环保产品博览会上获奖。
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