... R&D Staff: 11 - 20 People Number of QC Staff: 21 - 30 People Port: New Port,Tianjin/Beijin QA/QC: In ... solenoid valve, particularly when solenoid cannot work reliably,mini motorised valve, actuated valve, motor operated valve, motor actuated valve, automatic valve, control valve, shut off valve, hydraulic valve, electric valve, electronic valve.electric valve ...