... are factory that specialize in manufacturing balls and roll on bottle:1.plastic ball made of different material ,such as ... , cosmetic package,industrial ,track ball,and so on plastic roll on bottle 30ml--180ml PP,HDPE,PE cosmetic package ... glass roll on bottle25ml,30ml,45ml,50ml,75ml glass cosmetic package pharmaceutical packageperfume rods1mlglass+PEcosmetic package Plastic cap for roll on bottle ...