1.solid ball for bearing 2.china manufacturer for ball,,roll ball,roll bottle 3. ... PC,ABS,PE,HDPE and so onUsage:for ball bearing,cosmetic package,industrial ,track ball,and so on ... 1mm--60mm, mainly used in the industry of bearing.2) Plastic balls are made of different materials, such as PP,PE, ... ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm- ...