... after-sales service 4. competitive price& quality melamine 99.8%White powderPurity:99.80%minPacking:25kg, 50kg, and 1000kg pp bags 1 ... :not regulated 2.Specification:ItemStandardPurity, % min99.8Moisture, % max0.1PH7.5-9.5Ash content, % max0.03Haze degree, max20Color degree, max20 3.usage ...