Underwater hoisting device and fast connecting device thereof
Automobile thermal management intelligent radiator module and automobile
Worm gear for automobile steering engine and manufacturing method of worm gear
Underground flowing type curing kiln system for precast concrete parts
Preparation method of sterilizing and mildew-proof carriage plate and logistics vehicle carriage
Method for installing large-diameter air pipe in limited space
Regional automobile front door heat insulation glass and preparation method thereof
Temporary derrick for narrow underground space and mounting method thereof
Crane capable of preventing starting impact of cross beam and tension buffering structure of crane
Side-plate-free escalator pressing rail and mounting method thereof
Branch locking device for underground inclined drift transport mancar
Two-stage flow control telescopic system and control method thereof
Sea-air equipment system based on floating fan and control method of sea-air equipment system
Elevator guide rail support with vibration isolation function
Three-coordinate measurement auxiliary clamp and use method