Polyurethane roller ears for mine cage buffer are made from optimum quality CPU from well known companies both domestic and abroad such as Yantai Wanhua Chemicals etc.and with a large variety of designs,colors and sizes available for different users' option.Also can be customized according to buyers' special requirements.They are used mainly on equipment of mining industry due to the special nice features of different PU materials such as tearing resistance,long operating life etc.