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person:("zhang baohua")
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person:("zhang yaohui")
Forced hanging high-altitude tower crane falling protector
Falling protector with fatigue damage degree display function
Falling protector capable of adjusting buffering distance according to falling height
Anti-falling wall-attached elevator for construction site
Unit disability state monitoring system based on contact sensor
Unit disability state monitoring method based on non-contact sensor
Liquefied petroleum gas (LPG) buffer release tank and control system
Crown block control method, device and equipment and storage medium