lies in the northwest of development zone of Weifang. which is a professional chemical industry, oilfield services. CSC was established in 2008, has a number of chemical factories,( Weifang Wanhong chemical, CRE chemical, and CSC chemical). under the energetical support of the government of Party committee of a higher level and agricultural responsible institution, give full play to the marine mud flat resource advantage, CSC goes all out with and develop coastally synthetically, has already developed into sea water-collecting, salt-making, and other chemical product,etc,into one chemical group. there are over 1000 staff now.