Provinces:  Zhejiang, Jiangsu, Anhui, Shandong, Liaoning, Sichuan, etc., the business of other provinces is gradually expanding. 
Chemical Park:  Provide professional services for Hangzhou Linjiang Industrial Park, Jiangsu Yancheng Yanhai Chemical Park, Shandong Zibo High-tech Zone, Jiangsu Huai'an Salt Chemical Industrial Park and other chemical parks.