... shanghai are good examples.SICON-EMI Modular UPS is the new conception modular UPS, features with high efficiency (≥95%), high stability ... , 3/1, 1/3, 1/1GREAT PERFORMANCE INDEXOverall efficiency ≥ 95%, inverter efficiency ≥97%,THDI ≤ 3%, and input PF≥ 0.99Little weight ... UPS is very easy, just with the power module changed. pure sine wave online UPS