Nanyang Jinguan Electric Co. Ltd.is one of the biggest professional manufacturer of metal oxide varistor (MOV) and Lightning surge arrester (MOA or LA) in China. We have been researching and developing metal oxide varistor since 1979, and have been manufacturing metal oxide varistor and Lightning surge arrester since 1983. Our company has obtained the quality system certification of ISO9001. All of our products have measured up to requirement of international electric technical standard IEC60099-4. Among them 3 to 36 KV Arrester has passed through Kema test. Our other main products include sf6 current transformer (CT), Potential transformer (PT), composite insulator, box type transformer station, all of which are indispensable equipment in power generating plant, distributive substations, transformer substations. You may also visit our online company & products introduction: www.jinguan-electric.com.