Lanzhou WeiRi Bio-Engineering Co., Ltd. is a hi-tech enterprise engaged in the researching, developing, manufacturing and marketing of bio-engineering products.The registered capital is up to 10 million RMB. There are 158 employees in which 25 senior and secondary professional technicians.the company established high standard labs for R & D and application. Cooperated with Zhejiang University, Weiri has successfully developed a new series of natural food additives with international standard. The main products Nisin and Natamycin,as the high-efficient natural food preservatives,are extracted by physical technic without any organic solvent,meanwhile,we also produce a series of compound Nisin which applied with meat,dairy,bean products.They are really green products attracted more and more customers.