PUYANG GUANGMING CHEMICAL CO.,LTD. is professional manufacture GBL, NMP,NEP, N-methyl-2-pyrrolidone(NMP) for leads the product. Presently has 12000 mt/Annual production gamma - butyrolactone (GBL), 8000 mt N- methyl-2-pyrrolidone (NMP) and 2000 mt N- ethyl-2- pyrrolidone (NEP) Our NMP specificate: purity:99.9%Min, Water:200 ppm Max, Color: 10Max.We hope with each partner share specialized experience and chievement, unites efforts the innovation, altogether will lift the future