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河南红宇机械厂进行民品研究开发已有近20年的历史。早在20世纪80年代初，工厂响应中央“保军转民”的号召，大力开发民品，通过广泛的市场调查，确定以冷藏产品为民品发展方向。1984年开发成功了LK、NZL 2个系列金属组装式冷库，奠定了工厂以制冷技术为主的民品开发基础。1986
Henan Hongyu Machinery Factory for civilian research and development has nearly 20 years of history. As early as the early 1980s, the factory responded to the call of the Central Government to “transform the military into the People’s Liberation Army” and vigorously developed civilian products. Through extensive market research, the factory determined that cold-storage products should be the development direction of civilian products. In 1984, LK and NZL successfully developed two series of metal assembled cold storage, laying the foundation for the development of civilian products based on refrigeration technology. 1986