The factory produces BK series single-phase control transformer, JBK5 series single-phase control transformer, WDDG series single-phase dry-type isolation transformer, WDDG series single-phase dry-type heating transformer, WDSG series three-phase dry-type isolation transformer, WDSG series three-phase dry-type epoxy casting transformer, WD0SG series three-phase dry-type autotransformer and other specifications of the transformer.