WELLDONE is a professional manufacturer of high density alumina ceramic balls for grinding, the 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, enable us to keep on improving our production technology and product quality, all group members are dedicated to offering best quality of products and services. We aim at offering you with right products and services, achieving our best value.