Planning, manufacturing, construction, and sales of research, inspection, medical, and educational facilities (draft chambers, various experimental tables, sinks, etc.) and these facilities. Design, manufacturing, construction, and sales of exhaust gas and wastewater treatment equipment, constant temperature and humidity rooms, low-temperature testing rooms, etc. Design, manufacturing, construction, and sales of clean rooms, bio-clean rooms, cabinets for biohazard measures, isolators, and other dust-free and sterile equipment and related devices. Design, manufacturing, construction, and sales of semiconductor-related equipment such as etching booths. Design, manufacturing, construction, and sales of powder and granule processing machinery (crushing, granulating, mixing, classification, drying, lab machines, etc.).