... spectrum analyzers, 4XA metallographic microscopes, chemical analyzers, infrared carbon and sulfur analyzers, nondestructive flaw detectors, ... spectrophotometers, SXE-5-1 2 chamber type electric resistance furnaces, TS323A photoelectric analytical balance, WT-2216C ... chemical industry, petroleum, medicine, food, energy, electric power, aeronautics and astronautics, environmental protection, boiler gas ...