Founded in 1965, Yu Yao No. 4 Instrument Factory is a leading manufacturer of solenoid valves and has enjoyed an excellent reputation through the past 40 years in China. She has integrated the functions if science and technology, research and design, production and sales, maintenance and consulting. The main products are all kinds of fluid-control solenoid valves, and have 40 series. Now most of them are exported to USA, Europe, Middle East, and South Asia, etc.
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