AC metal-enclosed ring main unit

China YIFA Holding Group Co., Ltd. is a national high-tech enterprise group specialized in industrial electrical technology and also engaged in finance, e-commerce and trade and investment. It is a China Top 500 company, a China Top 500 company in the machinery industry, a national spark program enterprise, a famous brand in Jiangxi Province and a famous trade mark in Jiangxi Province. It is the designated supplier for centralized procurement by State Grid, China Southern Power Grid and national hydrological system. Its subsidiary Jiangxi YIFA Power Technology Co., Ltd. was listed in 2016 with the stock code 870154. The Group mainly develops, produces and sells such low-carbon, energy-conserving and eco-friendly products as photovoltaic substations, wind power substations, eco-friendly gas insulation ring main units, complete sets of electrical equipment, HV and extra high voltage substation equipment, glass reinforced plastic electric meter boxes, stainless steel and transparent boxes, HV and LV elements, wires and cables, explosion-proof electric apparatuses, building appliances, instruments, etc. The maximum capacity of transformers reaches 63000KVA and the voltage class reaches 220KV.