Stericycle, Inc.. The Group's principal activities are to collect, transport and treat medical waste. It also offers related consulting, training and education services and products. The operations are conducted through 42 treatment and collection centers and 97 additional transfer and collection sites in 24 states. The Group's treatment technologies include proprietary electro-thermal-deactivation system, autoclaving and incineration technologies. The Group serves customers located in the United States, Canada, Puerto Rico and Mexico. In 2002, it acquired Bio Environmental Services Inc, Pyroval Inc, Bio-Oxidation Services Inc, BMW Medtech Inc, A-Medco Inc, Bio-Waste Industries Inc, Sanitec LLC, Bridgeview Inc, Enviromed Inc, Micro-Med Inc and Ecotermica de Oriente, S.A. de C.V. On 09-Jan-2003, it acquired Scherer Healthcare Inc. Medical waste management services accounted for 98% of 2002 revenues and Proprietary equipment and technology license sales, 2%.