The Power Components Business Unit is the manufacturing and supply center for transformer on-load tap-changers, transformer bushings (dry type, oil-immersed type), vacuum oil treatment equipment and composite insulators for the ABB Group in China and the Asia-Pacific region. After more than ten years of development, it has been accepted by the majority of Chinese power customers. Hefei ABB Power Components Business Unit as the ABB Group to serve the local market in China's transformer components manufacturing and supply center, has become one of the main suppliers of high-quality transformer components in the Chinese market. The main products include: on-load tap-changers for transformers up to 110KV, transformer bushings for transformers up to 500KV, vacuum oil treatment equipment, composite insulators, etc. The business unit is also a supplier of transformer components for the Chinese market. With the expansion of production capacity, under the strong investment of ABB Group, Hefei ABB Power Components Business Unit has moved to a new plant in November 2009, which covers an area of more than 30,000 square meters. The new building covers an area of more than 30,000 square meters, making Hefei ABB Power Components the world's largest production base for ABB's transformer components.