Air Plenum - Provides precision cleaning for computer rooms, data centers, cleanrooms, controlled environments, and sensitive electric equipment. Arundel Elevator - Full service elevator maintenance and repair. ADA compliance. Controlled Contamination Services Homepage - Provides cleanroom cleaning, training, certification and consulting for high-tech industries where perfection is essential. D and D Maintenance and Millwright Service - Full service maintenance company providing turnkey installations of sanitary process piping, ammonia refrigeration systems and equipment. Hontz Elevator - Specializes in elevator maintenance and repair, modernization, service and construction. Leohil Inc. - A professional cleaning service. Details services available in Nevada and California. Mechanical Preservation Associates - Specializing in boilers, burners, chillers, cooling towers, mechanical design, piping installations. Merit Asphalt Repair Limited - Provides top quality parking lot repairs and traffic control marking. Performance Power Steam - Offers high pressure steam cleaning services for all areas of California and Nevada. World Service Company - Janitorial services for airlines and airports across the United States. Also provide services for shopping malls, banks, and office buildings.