... Co., Ltd was established in 2003 as professional manufacture of plastic roll on ball and bottle. In 2010 our company successfully passed the ISO ... PA,PMMATrackball,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 ... me.My name is Jane,welcome to chat with me. Plastic Roll On Hollow Ball