These two kinds of dry powders are our leading products. ABC powder also named Ammonium Phosphate PowderExtinguishing Agent, it is made from ammonium dihydrogen phosphate and treated by completes selication damp-proof and caking-proof processing. BC powder also named Sodium Bicarbonate Powder Extinguishing Agent, it is made from Sodium Bicarbonate and treated by complete silication damp-proof and caking-proof processing.