CerroZone LLC is part of the Plumbing & Refrigeration Group of Marmon Holdings, Inc., a Berkshire Hathaway Company (NYSE: BRK-A). CerroZone was formed based on a revolutionary, proprietary, patent-pending technology developed in conjunction with Micron PureTM, a Hecto GroupTM company. CerroZone is a true “game changer” in the air purification industry.