We produce the following transformer:S9 S11 S13 Oil type transformer:50-31500KVA,6-33KV,50/60HZ,off load tape changerSZ9 SZ11 oil type transformer:50-31500KVA, 6-33KV,50/60HZ, On load tape changerSCB9,SCB11 dry type transformer: F grade insulation, 50-3150KVA,6-33KV, 50/60HZSCBH15 11KV amorphous alloy dry type transformer:F grade insulation..