... PP solid ball 2.we can do all kinds plastic ball,roll on ball,roll on bottle product name specificationmaterialapplication solid ... so on plastic roll on bottle 50ml,75ml PP,HDPE,PE cosmetic package glass roll on ... cosmetic packaging, sewage disposal, and for floating. Solid ball diameter 1mm--60mm, mainly used in the ... balls are made of different materials, such as PP,PE, POM, PA,PMMA and so on. ...