A polymethacrylate type (PMA) viscosity index agent, suitable for anti-wear hydraulic oil and multi-grade gear oil and other industrial oils blended by base oils such as API I， API II， API III，etc， with excellent shear stability, good thermal stability and chemical stability, efficient thickening and improvement of viscosity index, and improve the viscosity and temperature performance of oil.Welcome to call and email us for detailed product information.