浙江瑞安永久机电厂是科研开发、生产经营、教育培训相结合的高科技企业,拥有自己的研究所、学校和一批生产分厂。生产自动阀及成套工业自动化仪表,尤以电磁阀、恒温疏水阀而著称于世。产品分各类电磁阀、恒温阀、疏水阀、减压阀、过滤阀和温度、压力、液位、测力仪表等四大类二十八个系列三千多种规格,自成体系,配套供应。特别是蒸汽加热和暖通空调系统成套液位、压力自控装置,深受航天、航空、石油、化工、冶金、建材、纺 Zhejiang Rui’an Permanent Machine Power Plant is a high-tech enterprise that combines research and development, production and operation, and education and training. It has its own research institutes, schools and a number of production branches. Production of automatic valves and complete sets of industrial automation instruments, especially solenoid valves and thermostatic traps are well known in the world. The products are divided into various types of electromagnetic valves, thermostatic valves, steam traps, pressure reducing valves, filter valves and temperature, pressure, liquid level, force measuring instruments and other four categories 28 series more than 3,000 kinds of specifications, self-contained system, supporting supply. Especially the steam heating and HVAC system complete set of liquid level, pressure automatic control device, by aerospace, aviation, petroleum, chemical, metallurgy, building materials, spinning