Multi-working-condition switchable platform seawater supply system
Lane AI intelligent automatic control height-limiting road closure device
Component-adjustable carbon dioxide mixed working medium refrigeration/heat pump system
Liquefied petroleum gas (LPG) buffer release tank and control system
Chassis power take-off device of special vehicle for oil field
Connecting rod type inerter device with variable inerter
Ship piping system and cable row support and installation method thereof
Reinforcing translation system of elevator and construction method thereof
Temporary derrick for narrow underground space and mounting method thereof