Bank of China (BOC) is one of the 5 biggest state-owned commercial banks in China. By right of the excellent quality, Kehua has been one of BOC's long-term partners. Since 1990, Kehua has provided more than 27,000 sets of UPS ranging from 0.5kVA to 200kVA, batteries and cabinets, have been widely used in the bank's electrical systems over 30 provinces, cities and regions.