Analysis:£¨metallic powders + balance£© Metallic powders Ni: 75% - 80% - 85% - 90% - 95% Balance 1.Pure aluminum 2.Non-hygroscopic sodium free flux 3.Pure aluminum + non-hygroscopic sodium free flux Colour Code Yellow. Tablets Mini-tablets(Briquettes) Unit Weight from 500g to 1000g from 50g to 200g Packing two or three tablets wrapped directly by aluminum foil. 20kgs in a cardboard 10kg to 20kg in kraft paper bag Guarantee period 8months. Two or three tablets wrapped directly by aluminum foil. 20kgs in a cardboard 10kg to 20kg in kraft paper bag.