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Ignition switch with state display and unlocking method thereof
Bag finger type air cushion system of water surface aircraft
Storage and transportation device for energy materials
New energy automobile charging pile voltage control equipment heat dissipation structure
Traffic light intersection traffic jam detection regulation and control device
Traffic light equipment capable of adjusting lighting time
Electronic parking control device for new energy automobile
Traffic indicating device for tailgating left-turn and working method thereof
Pilotless automobile and safety seat suitable for pilotless automobile