上海比例積分電動二通閥|比例積分電動調節閥產品概述 上海比例積分電動調節閥系列能調節蒸汽或冷熱水的流量,廣泛用于空調、采暖、水處理、工業加工行業等系統的流體控制。(An overview of the proportional integral power of two way valve Shanghai proportional integral electric control valve series can adjust the steam or hot and cold water flow is widely used in the fluid control system of central air conditioning, heating, water treatment, industrial processing industries).