Shandong Qingyun ChangXin Chemical Science-tech Co.,Ltd.
Profile: Shandong Qingyun ChangXin Chemical Science-tech Co.,Ltd. specializes in the manufacturing and trade of 1-methyl-2-pyrrolidinone and butyrolactone series. Our electronic grade 1-Methyl-2-pyrrolidinone is used in the electronic industry as a solvent, as a remover liquid of photoresist, in the production of LCD materials, and for cleaning of precision instruments and circuit boards.