Special intelligent unmanned aerial vehicle for agriculture and forestry
High-temperature-resistant automotive braking system and control method thereof
Cabin water-washing device for 8200T chemical/product oil tanker
Direct-driven elevator lift car safety auxiliary supporting device
Method for truck and bus TPMS sending unit fast coupling
Direct-driven elevator three-dimensional steering mechanism
Multi-way valve rotation folding arm fixing mechanism of drilling crane
Navigation aircraft landing gear folding and unfolding system