magnesium carbonated,China xinglian price supplier

item                    index
                        USP30
indentification  meet the requirements
saaay(MgO)%             40.0-43.5
soluble substances<%       1.0 
acid-soluble substances<%  0.05
sulphates<%                --
chlorides<                 --
As<                      4ppm
CaO<%                     0.45
heavy metals<             0.003%
iron<%                    0.02
lead<%                    --
E.coli                    negive