... We are specialize in producing plastic balls. Hollow plastic ball diameter10mm100mm, are mainly used in the cosmetic packaging, ... PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm-100mmPP,PE,HDPERoll on ball,Bearing ball,Ball valve,Floating ball,and ... so onRoll on ball and holder8mm, 10mm,19.05mm ...