Shanghai O.M.L Industrial Co., Ltd, which was established in 1996. We produce and sell propylamine, Dipropylamine, Tripropylamine, Butylamine, Di-n-butylamine, Tributylamine, n-butyric acid, Isobutyric acid. With our group's great effort, our product has gone to all over the world. Please feel free to contact us for any questions!