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Local government in Peixian County,Jiangsu province made use of its advantage in re-sources and constructed a salt chemical industry base in recent years.In the 300000 t/a caustic soda and 300000 t/a PVC(polyvinyl chloride)project funded by Xuzhou Tiancheng Chlor-Alkali Co.,Ltd.with a total investment of RMB3.0 billion,the first phase with a capacity of 100000 t/a caustic soda and 100000 t/a PVC has already