... Timely delivery I. We are manufacturer of barium sulfate,barium sulfate precipitated,barium sulphate,permanent white,baritite,blancfixe,artificial heavy ... 4) Timely delivery(5) Many specifications III. barium sulfate,barium sulfate precipitated,barium sulphate,permanent white,baritite,blancfixe,artificial heavy ... Sulphate>98%PH Value6.5—8Water-soluble<0.2%Iron(Fe)<0.004%Sulphite<0.003%45um sieve residue ...