... Package 10000pcs/box The production per day for the size ball 20mm is :250, ... ,PA(NYLON),PC,ABS,PE,HDPE and so onUsage:for ball bearing,cosmetic package,industrial ... ,track ball,and so on hollow ballsize:9.5mm--100mmPP,POM,PA(NYLON),PC,ABS,PE ... 2mm--35.56mmplastic ball+pe houldercosmetic package china plastics hollow ball for mining industry,water cover floating ...