Правильное питание, Трехлебов

Second, the quality is good or bad, depends on the Bead Mill to wrap the grinding disk that piece of cloth, grinding disc between itself and the parts can not come into direct contact, so that will make the parts in the process wear, the grinding disk need to use a protective film, but also we are talking about polishing cloth, Lab Sand Mill to a good play the role of a protective parts.