Ningbo Zhengmao Electronics Co., Ltd. is located in Ningbo, a port city in Zhejiang Province, China. Our company is specializing in researching and developing, producing, and selling components used in telecommunication, electron and electric power. We can supply all types and standards of metal ceramic gas discharge tubes and switching spark gaps. Our company has a building covering an area of more than 6,000 square meters. Our facilities and testing equipment are advanced, using high technology.



Our ceramic gas discharge tubes have complete varieties and standards with...