Wind-solar-coupling foundation-pit-less energy-saving elevator system based on Internet of Things
Sound insulation and heat insulation pad of automobile and production process thereof
Offshore semi-submersible fan foundation and wind generating set
Low-grade concrete long-distance pouring device based on telescopic corrugated pipe
Loading and unloading interlocking control device and control method for overhead working truck
Elevator special-shaped decorative door pocket structure, production process and construction method
Confluence type throttling speed regulation multi-way valve and accelerator linkage control system
Air pipe lifting installation structure and construction method
Airborne weapon bay section connecting and quick disassembling and assembling mechanism