Uses are as follows: In the food industry, it is commonly added as a calcium fortifier to various foods such as dairy products, beverages, and baked goods to increase the calcium content and meet the body's needs for calcium. This is particularly suitable for children, pregnant women, and the elderly, who have higher calcium requirements. In the pharmaceutical industry, it can be used to prepare calcium supplements for the prevention and treatment of calcium deficiency disorders, such as osteoporosis, tetany, hypoplasia, rickets, and to meet the calcium needs of children, pregnant and lactating women, menopausal women, and the elderly. Compared to other calcium sources, it has better solubility, a relatively higher bioavailability, and less irritation to the gastrointestinal tract.