Hollow spheres, hollow plastic ball, hollow plastic ball hollow ball mainly multi-faceted, hollow spheres of alumina, hollow ball packing, hollow ball PP plastic ball, hollow ball of polypropylene plastic ball, hollow plastic ball oil ball PE ball hollow plastic ball, hollow plastic ball alumina ball, hollow plastic balls packed ball, hollow plastic balls plating tank ball. Hollow spheres, hollow plastic ball, hollow plastic ball with a good solvent, oil type, resistance to weak acid, weak base such as performance, high resistance to creep and stress capacity, and excellent wear resistance, self lubrication, fatigue. Hollow spheres, hollow plastic ball, hollow plastic ball is characterized by the proportion of small, non-toxic, insulation, acid, alkali, corrosion resistance, temperature resistance: