（code：SPA）
Characteristic:
SPA is a white calcined alumina abrasive powder consisting of plate-shaped crystals of aluminum oxide(Al2O3)with a purity of over 99.0%.Chemically inert Will not be corroded by either acids or alkalines. Excellent heat-resistant properties.Greater number of uniform grades than available from most manufacturers.Applications:
Lapping agent for:Silicon,Optical materials,Liquid crystal,Stainless steel, Other materials
Filler material for coatings,Material for lapping cloth or paper,
Compounding agent combined with a metal or synthetic resin
Particle size：
SPA3—SPA45
Standard Specifications for Particle Size and Quality：
