SiLiBeads® M-type Glass Beads, Art.5000 Soda Glass Solids, PbO-Free!, Φ1.5~18 mm use ; “Mixing Beads in Aerosol Spray?Boiling Stones?Filler of Distillation Column or Distillation Tower?Grinding Ball?Valve Ball?Surface Treatment Agent, etc” 글라스 비드,“ 믹싱 비드·비등석·증류 칼럼/탑 충진제·연마용볼·볼밸브·표면처리제, etc.”