Residential Area Fire fighting equipment, lighting, household Public buildings, schools, commercial spaces Fire fighting equipment, inverter air conditi Industrial and mining, ports, construction sites Stone crushing machinery, conveyor belts, pil Ship and automobile manufacturing Robot welding, electric welding, forging Textile Frequency conversion, counter current rectifi Metallurgy Frequency conversion, counter current rectifi New energy Photovoltaic power generation, wind power gen Rail Metro, light rail, tram, electric train