電(dian)(dian)動單座調節閥（材(cai)質碳鋼、配(pei)PSL型電(dian)(dian)動執行器、輸入輸出信號4-20mA）適(shi)合水(shui)、氣(qi)體、蒸(zheng)汽、油(you)品等場合使用(yong)
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