We can design, produce, install and debug the frenquency conversion and control system (crane cabinet) and PLC control system for hoist crane start and control according to clients' requests.Operating environment: 1) Indoor installment: IP22, IP23 2) Outdoor installment: IP54, IP55 3) Relative humidity: 85%, max. daily average relative humidity: 95% 4) Below altitude above sea level: 2,000 meters