... thee biodegradation,thenon -toxic ecology environmetal protection material. The Wool polishing ball is one kind of thee biodegradation,thenon -toxic ecology ... ,7,8-inch ball of wool and rabbit hair ball polishing, and can produce 2,3,4,5,6,7,8 ... wood furniture industry, automobile manufacturing, automobile hub, etc., dedicated to polishing the surface and parts.Due to availability of timely, reliable ...