Basic infrastructure equipment used in research and development departments and quality control laboratories in manufacturing industries. Includes equipment necessary for constructing and maintaining experimental environments such as laboratory benches, draft chambers, clean benches, constant temperature and humidity chambers, pure water production equipment, gas supply systems, exhaust systems, laboratory sinks, chemical storage cabinets, and safety showers. This equipment group is designed for environmental control and safety assurance in preprocessing, sample preparation, and chemical analysis for material testing and quality inspection, distinguished from measuring instruments and analytical devices as laboratory infrastructure equipment.