Shijiazhuang Sincere Chemicals Co., Ltd.  

Formamide, Tetramethylethylenediamine, Dichlorodiethyl ether, 35-Dimethylpiperidine, N-Methylmorpholine, N-formylmorpholine, N-Methylmorpholine N-oxide, N,N-Dimethylethanolamine, Methyl amine hydrochloride, N-Methylcyclohexylamine, O-Phenyl Enediamine, N-Methylpyrrolidone