... ,PMMA and so on. The tolerance can be 0.01mm with good surface and precision.3) Our products are mainly sold ... ,POM,PA,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 ... ,50ml,60ml,75ml,120mlPPCosmetic packagingOur products are good in quality with low prices.We look forward to receiving your order! 9mm ...