glass beads for sandblasting , polishing , grinding . Industrial usage The glass beads used in metal cleaning, polishing & filler materials in plastic, paint & rubber manufacturing. It is good toughness, can stand wear & tear, good stabilization on chemical properties, PH=7.2 Micro hardness≥635kg/ m3. It is extensive to used for the machine parts, nicety instruments to Polishing and rubbing, the ...