Hanging core and oil-free testing. Transformer package, using vacuum filtration oiling process to completely remove the moisture in the transformer oil. After sealing the inside of the transformer is not in contact with the air, effectively prevent oxygen and moisture into the insulation performance degradation caused by a transformer. My company specializes in electric power transmission and distribution equipment and product design and manufacturing, products mainly include 35KV and below oil-immersed power transformers, cast resin dry type transformers, low voltage switch cabinet, American Continental substation to GB / IEC as a benchmark, passed CTQC testing, access to the national grid network qualification, through ISO9001 CCC certification and obtain *, customers are welcome to contact negotiations, site visits, and work together.