... are the factory of manufacturing products. high quanlity 15mm PTFE valve ball1) we are specialize in producing plastic balls. ... ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ... -100mmPP,PE,HDPERoll on ball,Bearing ball,Ball valve,Floating ball,and so onRoll on ball and ... forward to receiving your order! high quanlity 15mm PTFE valve ball