... .5mm--55mmPP,POM,PA(NYLON),PC,ABS,PE,HDPE and so onUsage:for ball bearing,cosmetic package,industrial ... .5mm--100mmPP,POM,PA(NYLON),PC,ABS,PE,HDPE and so on Usage:floating ball,valve ball, ... 30ml,40ml,50ml,60ml,75ml,120ml,180ml PP,HDPE,PE cosmetic packagemedical package glass roll on bottle25ml, ... houldercosmetic package china plastics hollow ball for mining industry,water cover floating without grinding