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person:("dong liang")
Constant-current control circuit and automobile low-voltage constant-current system
Vehicle-mounted display multi-dimensional adjusting mechanism and display assembly
Help calling device used for ships and airplanes and powered by solar photovoltaic power
Multifunctional solar-powered intelligent monitoring traffic signal unmanned directing post
Movable anti-corrosion multifunctional electric vehicle charging pile
Electric vehicle charging station taking photovoltaic power generation as power supply
ELECTRIC STEERING SYSTEM FOR SHIP PROPULSION APPARATUS AND METHOD THEREOF