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Chenglei Dq 63000n. M Explosion Proof High Torque Partial Turn Gear Box Electric Butterfly Valve Actuator, Find Details and Price about Electric Valve Actuator Damper Actuator from Chenglei Dq 63000n. M Explosion Proof High Torque Partial Turn Gear Box Electric Butterfly Valve Actuator - Changzhou Chenglei Valve Technology Co., Ltd.