2005年是中国氯碱生产能力增长最快的年份,截至6月份,中国烧碱生产能力已达1388.6万t/a(其中离子膜法616.2万t/a),企业平均生产规模达到7.8万t/a,呈现出向大型化、高技术含量加速发展的态势。今年上半年,中国PV C市场由于大量新产能投产及下游需求增长缓慢等因素,整体走势低迷, The year 2005 witnessed the fastest growth of chlor-alkali production capacity in China. As of June, the production capacity of caustic soda in China reached 13.886 million tons / year (including 6,162,000 tons / year by ion-exchange membrane method) and the average production scale of enterprises reached 78,000 tons per year , Showing a trend toward large-scale and high-tech development. In the first half of this year, due to a large number of new capacity production and slow growth of downstream demand, the overall PV market in China was sluggish.