PU is a very special material which possesses elasticity from rubber, and the strength of plastic. The hardness ranges from 10A to 75D. PU has strong abrasive resistance and corrosive resistance. It can be widely used in many applications. Normally you should look at the working environment. For example, the application (castors, rollers…etc ), the hardness, specific properties requirement (tensile strength, rebound…etc.). Based on the answers to these questions, our specialists will be able to suggest the most suitable CPU to you.