The Mark-Costello Co. was established in the Greater Los Angeles area in 1956 as a Manufacturer Distributor, emphasizing designing, building, supplying, and servicing industrial trash compactors, vertical and horizontal balers, and Medical and Regulated Waste Autoclaves. We are a manufacturer and provider of On-Site Medical Waste Sterilization (Autoclaves) equipment and service locally, nationally, and internationally. Currently, we have over 600 on-site medical waste systems professionally installed throughout the United States and 23 foreign countries.