Guangzhou Guanggao High Voltage Electric Apparatus Co., Ltd, specializing in the production of energy efficient power transformers, high and low voltage switchgear equipment, environmentally friendly wire, cable and electrical products, which is largest manufacturer of electrical products in Guangdong Province. It's first batch of power transformers and switchgear manufacturers appointed by ministry of mechanical and electrical industry, it's recommended as the first batch of urban and rural power grid construction and renovation of major equipment production enterprises by the State Economic and Trade Commission. It has a name of National people-benefit project promotion entreprise of energy efficient transformer, state high-tech enterprises and innovate pilot enterprises of the province, it's a leader enterprise in Guangzhou City and popular science base of Guangzhou City. The brand of GuangGao was founded in 1958, was identified as "Guangdong time-honored brand".

Company has employees more than 500 people, with the domestic excellent mechanical and electrical experts, research and development personnel, technical staffs and marketing teams. Specializing in researching and developing power transformers, high and low voltage switchgear, environmentally friendly wire and cable and electrical products, product design, quality performance keep at leading domestic level. Our device 220kV-class power transformer has passed through the ItalianCESI certification, 110KV - class power transformer products also through the Netherlands KEMA certification; Our technology has reached the international advanced level. The company has more than 20 power transformer products were identified as high-tech products in Guangdong province and was included on the list of procurement directory by Guangdong provincial government, the brand of GuangGao including 110KV and below oil-immersed power transformer, resin insulated dry-type power transformers and intelligent ring main unit was rated as brand-name products in Guangdong province.

The company invested and built modern laboratories, which has high voltage test hall, 3000KV lightning impulse generator, has Mitsubushi CA-21 trace moisture measuring instrument and other advanced test equipment import from Japan. Since 2011, it becomes the national power transformer energy efficiency testing laboratories by verigying through the China Energy Efficiency Labeling Center.

Our company's brand "Guanggao" has a good reputation in the mechanicaland electrical market, it was named as famous brand and judged continuously 13 years as trustworthy enterprises. Because of high level of invent technology, in 2013, it's approved to found a Transformer (Guanggao) Engieering Technology Research Center by the Guangdong Provincial Science and Technology Agency, in the same year, organized a Guangdong Provincial Enterprise Technology Center that approved by the Guangdong Provincial Economic and Information Commitee.