According to CRI, China is a leading power of the production capacity and volume of caustic soda, polyvinyl chloride and chlorine in the globe.
Up to the end of 2015, the number of existing caustic soda manufacturers was 163 and the total production capacity was 38.73 million tons per year with an increase of 28.2% compared to that of 2010 in China, of which the production capacity of ion-exchange membrane was 38.18 million tons with a proportion of about 98.6%. Caustic soda manufacturers mainly concentrate in Shandong, Jiangsu, Inner Mongolia, Xinjiang, Henan and Zhejiang with an aggregate production capacity proportion of 61.5% of the total.
There were 81 operating polyvinyl chloride manufacturers with a total production capacity of 23.48 million tons per year, of which the calcium carbide method was 19.18 million tons with a proportion of about 81.7% of the total by the end of 2015. Major production capacity was distributed in Inner Mongolia, Shandong, Tianjin, Shaanxi and Henan with an aggregate proportion of 62.2% of the total.
The chlor-alkali industry transfers in terms of development trend and structural problems for the slump growth rate of economy in China and the international financial crisis in 2008.
In recent years, the production capacity of new caustic soda and PVC experienced a significant growth with the rapid development and project investment in various areas. Meanwhile, the downstream consumption increased rapidly and stably while the growth rate was smaller than that of the production capacity with an intensifying overcapacity for the imbalance between supply and demand.