equipment: Sewage and wastewater treatment equipment, sludge treatment equipment, solid-liquid separation equipment, oil-water separation equipment, evaporation concentration equipment, water purification and water treatment equipment, (ultra) pure water production equipment, seawater desalination equipment, filtration equipment (membrane) separation equipment, microfiltration machine, rapid filtration equipment, filter press, etc.), MBR units, ozone treatment equipment, ultraviolet (LED) sterilizers, ultra-fine bubble diffusers, micro/nano bubble generators, water pumps, blowers, wastewater recycling equipment, various measurement and analysis equipment, smart instruments, etc.