Flexibly-deformable trailing edge variable camber wing rib
Charging pile, charging management method, charging management system and storage medium
Inflatable boat with split type quick-release air supply equipment
Split type inflatable life-saving equipment easy to store
Combined quick-release lifesaving equipment with driving unit
Intelligent bidirectional control windscreen wiper device for ship
Multi-directional expansion type portable inflatable life-saving equipment
Modularized inflatable life jacket easy to assemble and disassemble
Inflatable life jacket with thermal insulation protective cover
Portable inflatable lifesaving device with multi-control mechanism
Lifesaving device with built-in centrifugal blade driving mechanism