Polyurethane wheels from Yantai Zhengyuan Polyurethane Co.,Ltd. Are purely made of excellent quality CPU or TPU only without combining with other materials like metal etc.They are fabricated by casting or injection and become unique products that offer the elasticity of rubber wheels combined with the toughness and durability of metal wheels. this makes polyurethane Wheels are of exceptional advantages such as hardness and colors flexible,multiple resistance to abrasion,tearing,ageing,oil and solvent etc. So to be used widely in many industries.