... post service, public security, customs, government and other entities at home and abroad.2008 Beijing Olympic stadiums, Expo 2010 shanghai are ... module: 3KVA, 6KVA, 5KVA, 10KVA, 15KVA, 20KVA MODULAR STRUCTUREThe UPS system is real modular structure. Each power module functions as ... the users. And the maintenances of the UPS is very easy, just with the power module changed. pure sine wave online UPS