Abstract: A wireless charger includes an upper housing assembly, a lower housing assembly, a magnetic sheet coil, and a heat dissipation ring. A concave structure is provided on an upper surface of the lower housing assembly, and the concave structure is coupled to the upper housing assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil and the heat dissipation ring. The heat dissipation ring is embedded in the magnetic sheet coil and is in contact with the magnetic sheet coil. An upper surface of the heat dissipation ring is coupled to the upper housing assembly. A lower surface of the heat dissipation ring is coupled to a bottom of the concave structure of the lower housing assembly. The heat dissipation ring may transfer heat in the upper housing assembly to the bottom of the lower housing assembly.

Abstract: A crash barrier system for forming a crash barrier including a plurality of barrier units, each barrier unit including a body having at least one crash wall, the body defining a cavity for receiving ballast; the crash wall including a series of longitudinal grooves on the outside surface thereof, each groove adapted to house a reinforcement bar; a first barrier unit is connectable to an adjacent second barrier unit by locking pins; at least one locking pin able to pass through apertures in the body of the first barrier unit and reinforcement bar(s) housed in the crash wall of the first barrier unit, and through apertures in the adjacent second barrier unit and reinforcement bar(s) housed in the crash wall of the adjacent second barrier unit so as to lock the barrier units together to form the crash barrier.