Bioionix, Inc. signed an agreement today to provide two Bioionix microbial control systems to Chula Vista Cheese Company. Located in rural Browntown, near Monroe, Wis., Chula Vista is doubling its capacity to manufacture Mexican-style cheese varieties. This category is growing very rapidly in the U.S. due to the expanding Hispanic population and increasing general interest in Mexican food. Chula Vista is owned by V&V Supremo, Chicago, and its cheese is sold under that brand name.