Melamine, Urea, Sodium Nitrite manufacturer / supplier in China, offering Industrial Melamine Powder 99.8% Purity, Adipic Acid 99.7% (CAS 124-04-9) Industrial Grade for Nylon 66/PU/Resins 25kg Bag, N, N-Dimethylformamide Purity 99.9% Minimum/ DMF and so on.