Hi,Mr.Chengwei my name is Mas MD from Thailand I'm interested in your product :Magnesium sulphate, Zn sulphate, ( M.A.P ) monopotussium phosphate D.A.P Di-ammonium phosphate I want to know that price Please send me information of your factory , product and Quatation urgently and contact me back Thanks. mas my mobile: +66 8 5812 6926 e-mail: skyworkinter@hotmail.com