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国营第八九一厂(贵州振华群英电器有限公司)始建于1966年,是国家微型密封电磁继电器和航空航天用接触器研制、生产的核心企业。产品广泛用于以“神州系列”为代表的载人航天工程和几乎所有的国防重点工程,为国防建设和国家宇航事业提供大量优质可靠的产品,多次受到中央军委、原国防科工委、工业和信息化部的表彰。企业建有国内唯一一条微型密封电磁继电器贯军标生产线;建有一条高性能的密封延时继电器贯军标生产线;企业独立承担了国家航空航天用接触器系列型谱开发任务。现已有包括TO-5微型继电器、接触器、晶体罩
Founded in 1966, State-owned No. 89 Factory (Guizhou Zhenhua Qunying Electric Co., Ltd.) is a core enterprise engaged in the research and production of national miniature sealed electromagnetic relays and aerospace contactors. Products are widely used in “Shenzhou series” as the representative of the manned space project and almost all of the key national defense projects for national defense and national aerospace industry to provide a large number of high quality and reliable products, many times by the Central Military Commission, the former Defense Science and Industry Commission, Ministry of Industry and Information Technology commendation. The company built the only one micro-sealed electromagnetic relay Jian-standard production line; built a high-performance sealed delay relay Jianjun standard production lines; enterprises bear the national aerospace contactor series spectrum development tasks. Now including TO-5 miniature relays, contactors, crystal enclosures