... transformer used for the field of pro-amplifier, audio system, home electrical appliance, lighting, Medical equipments, Halogen quartz ... UL1411, EN61558, EN6060-1, UL2601, UL544 e. Insulation Class B, Class F, Class H f. Mounting One Metal plate, Two Rubber pads ... in factory and workshop, use modern scientific management system.b. Imported advanced production facility, trained best skillful engineer ...