Nanjing Cuckoo Biotechnology Co., Ltd.main research and sales of natural pigment, natural seasonings and a by-product of natural plant extracts, and a number of domestic and foreign food processing manufacturers to establish good relations of cooperation. The products are widely used in food, beverage, pickles, condiments, health care products, pharmaceutical and other industries. Product raw materials are derived from natural plant, natural, non-toxic, harmless, no side effects. Natural pigment by definition have a coloring agent, but while still retaining a natural nutrients, and the entire production process is not polluting emissions, adhere to environmental protection and sustainable development route.