Tryptophan is one of the eight essential amino acids in human and animal life activities, and plays an important physiological role in the growth and metabolism of humans and animals. Without this protein, humans will not survive. It is one of the components of the DNA building block and is very important for the production of serotonin and melatonin. It can be obtained from foods such as dairy, banana, chocolate and poultry. The tryptophan extraction resin provided by Suzhou Bojie Resin Technology Co., Ltd. can effectively adsorb tryptophan, which has the advantages of strong selectivity, easy desorption, large adsorption capacity and fast adsorption rate. The resin itself has high mechanical strength and low dissolution loss rate. Reusable after repeated use, high recycling rate, high economic efficiency, customer feedback is very good.