... 2003 as professional manufacture of plastic roll on ball and bottle. In 2010 our company successfully passed ... Ball valve,Bearing ball, Roll on ball,and so onHollow ball9.5mm-100mmPP,PE,HDPERoll on ball,Bearing ball,Ball valve,Floating ball ... ,and so onRoll on ball and holder8mm, 10mm,19 ... to chat with me. 1.4" Clear Plastic rollon Ball