CNLZWR is a hi-tech enterprise engaged in the researching, developing, manufacturing and marketing of bio-engineering products. The main products Nisin and Natamycin, as the high-efficient natural food preservatives, Meanwhile, we also produce a series of compound Nisin which applied with meat, dairy, bean products. WeiRi has passed the ISO9001-2000 & ISO22000-2005 quality management system , KOSHER, HALAL, FDA certificates.