... 25kg, 500kg, and 1,000kg pp bag melamine industry grademelamine industry grade whitemelamine industry grade packing :In 25kg, 500kg, and 1 ... or strong alkali liquor, melamine will hydrolyze---amido group will be slowly replaced by hydroxyl, thus generate ammeline ... widely used in wood, plastic, dope, paper-making, textile industry, leather, electric, and medicine, etc. GradePremium gradesContent(%) , ...