... ,ISO9001,ISO14001,OHSAS18001 2.Apply for IEC,ANSI 3.oil immersed power transformer 4.5 years warran The three-phase ... out the standard1. GB1094.1 ~ 2-1996 power transformer2. GB1094.3, 5-2003 power transformer3. GB/T6451-2008 oil-immersed three-phases ... save energy obviously, widely used in industry and agriculture, urban and rural power grid.2. High reliability, performance level advanced, economical ...