Packing: 25kgs kraft bag. detail specification as follows: Specification: Food grade :Content:: 98% min, Loss on dry: pass the test, Heavy metal (as Pb):0.002% max, As:0.0003% max, Mg or Alkali Metals: 1% maxFeed grade: Content: 98%, Loss on dry: 24%-29%, Heavy metal (as Pb):0.003% max