... with high quality 1) We are specialize in producing plastic balls. Hollow plastic ball diameter10mm100mm, are mainly used in the cosmetic packaging ... PE,HDPE and so onUsage:for ball bearing,cosmetic package,industrial ,track ball,and so on hollow ballsize:10mm--100mmPP,POM ... :floating ball,valve ball,sewage ball,cosmetic package,industrial ,track ball,and so on plastic roll on bottle 30ml,40ml,50ml,60ml ...