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产品介绍：Item Standard Total P: 21%min Calcium: 15-20% As F Unit: 0.18% max As As Unit: 30PPM max As Pb Unit: 30PPM max Water Content: 4%max Particle size Particle size Ⅰ pass500μm 90%min Particle size Ⅱ pass10-35mesh 90%min Particle size Ⅲ pass20-60mesh 90%min