Wave blocking slope plate device for amphibious operation of roll-on-roll-off ship
Watertight springboard door equipment for lightering operation between roll-on-roll-off ships
Flexible battery changing station capable of self-adapting to battery size
Centralized charging and distributed battery changing system
Gas-electricity graded heating system for freezing prevention of polar region ship stairs
Communication method of battery swap vehicle and battery swap station
Austenite light wear-resistant steel as well as preparation method and application thereof
Liftable support for building engineering construction