... established in 2003 as professional manufacture of plastic roll on ball and bottle. In 2010 our company successfully ... ,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball9.5mm-100mmPP,PE,HDPERoll ... ball,Ball valve,Floating ball,and so onRoll on ball and holder8mm, 10mm,19.05mm,25.2mm ... please don't hesitate to contact with me.My name is Jane,welcome to chat with me. 2012 New ...