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Standard; Q/HZL 16-2003Appearance ;White fine powderProtein ;≥1.8% Calcium;≥37.5%Water;≤3% Mesh;200mesh ,500mesh ,2000mesh,6000meshpathogenic bacterium ;Negtive Lead;≤1mg/kgHg;≤0.5mg/kg As;≤0.5mg/kg
High quality natural pearl powder