78344332
Dec 22, 2003
Jul 12, 2005
newsletter, periodicals, brochures, and pamphlets on the subject of testing and balancing of heating, ventilating, and air-conditioning (hvac) systems, a manual of national standards for testing and balancing of hvac systems, and a manual of test and balance procedures
Paper Goods and Printed MatterDiagnostic services, namely, independent testing and balancing of heating, ventilating, and air-conditioning (hvac) systems
Computer and Scientific