This product is made from high-quality marine biological materials and produced through a protective baking and segmented activation process. It belongs to a slow-release soil conditioner containing calcium and magnesium, and has the functions of neutralizing soil acidity, increasing available calcium and magnesium in the soil, passivating soil heavy metals to reduce their harmness, and improving the physical and chemical structure of the soil. It can effectively supplement crops with calcium and magnesium nutrients, and prevent phenomena such as premature aging, reduced resistance, and poor growth caused by calcium and magnesium deficiencies. This product does not contain any plant hormones and is very safe for crops.