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Located in Paramount, California, The Mark-Costello Co. has been in business in Southern California since 1956 and has been marketing/building and installing waste handling systems for over 40 years. Manufacturing Medical Waste Sterilizers as well as providing Boilers, Compactors, Balers, Shredders and Cart Washers to complete the system. With to date over 700 medical waste systems installed throughout the country and 25 countries outside the US....Plant layout, design and engineering is what we do. mark-costello.com