Alginate Oligosaccharide (AOS) is derived from alginate, a type of polysaccharide widely found in various brown algae. Alginate is a general term for hydrophilic derivatives of alginic acid. In Europe, Ascophyllum nodosum and Laminaria digitata are abundant and thus serve as the main raw materials for alginate extraction. Along the Americas, Macrocystis pyrifera (giant kelp) grows extensively and is the primary source for alginate production. In Asia, artificially cultivated kelp is widespread and yields are high, making cultivated kelp the dominant raw material for alginate extraction. Nanning Harworld Biotechnology Co.,Ltd utilizes advanced purification technologies to produce pharmaceutical-grade alginate oligosaccharide with a purity of 99.9%.