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Lanzhou WeiRi Bio-Engineering Co., Ltd. is a hi-tech enterprise engaged in the researching, developing, manufacturing and marketing of bioengineering products. The registered capital is 10 million RMB. There are 158 employees, in which there are 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, which has attracted more and more customers.