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 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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The country has made substantial scientific and technological achievements in some research areas , such as the comprehensive prevention and control of beijing ' s environmental pollution , the capacity of the atmospheric environment , the background value and environmental capacity of the nation ' s major soils , acid deposition and its impact and control , the forecasting and monitoring of the influence of the changes in the global climate and corresponding countermeasures , the depollution of coal , and the control of air pollution 国家取得了北京市环境污染综合防治研究、大气环境容量研究、全国主要土壤背景值与环境容量研究、酸沉降及其影响和控制技术研究、全球气候变化预测影响和对策研究、洁净煤及大气污染控制技术研究等一大批科技成果。
