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1-Methyl-2-Pyrrolidone CAS No 872-50-4 NMP pharma/ industrial /electronic grade, Find Details and Price about NMP N-Methyl Pyrrolidone solvent from 1-Methyl-2-Pyrrolidone CAS No 872-50-4 NMP pharma/ industrial /electronic grade - Shanghai Yuking Water Soluble Material Tech Co., Ltd.