... USDMC550N, Natural Gas Generator(3 phase, PF0.8, 50Hz, 1,500 RPM, 400V, Prime power 500kw, Standby power 550kw, Continuous Power ... payment within 3 workdays after both sides sign the P/I or contractThe rest of 65% before shipping.Quality Warranty:Warranty ... the first buyer (2) One year after installation (3) 1,500 running hours (accumulated), whichever comes earlier.