WELLDONE is established in 2015,is a branch company of ZHENGSEN GROUP, specializes in exporting chemicals and importing wine and olive oil. The group company owns the most advanced production technology and excellent management system, specializes in manufacturing high purity alumina series products, wastewater treatment chemical series products and Enhance Oil Recovery (EOR) chemicals. Collaborating with Shandong University, Ocean University of China and Shandong University of Technology, enabl