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Lifting appliance track and posture control method of forklift loader, forklift loader and medium
Engineering surveying and mapping device based on unmanned aerial vehicle
Device and method for hanging pipeline in closed space
Intelligent access control circuit and control method
Ground anchor device for gantry crane installation and construction method
Method for hoisting mountain land overhead pedestrian way
Elevator temperature and humidity detection device and system
Elevator operation height detection device and system
Elevator accelerated speed detection apparatus and system
Device and system for elevator door opening and closing state detection
Elevator human body state detection apparatus and system
Walking mechanism of fully-mechanized coal winning machine