Product Features: High purity, optimum Ca/P ratio, and great biological availability. Manufactured by an unique and innovative method patented in China with superior and consistent quality but low production cost. Packing: 25/50KG net of Bag, 1000KG/Bag. Storage and Transport: It should be stored in a cool, dry, and ventilated places. It should be kept away from rain and sunshine during transport. Its shelf life is eternity.