Abstract: A plug connector coupled to a receptacle connector is presented, comprising: a conductor for signals; a ring-shaped conductor for ground, the conductor for ground surrounding the conductor for signals; a ring-shaped insulator surrounding the conductor for signals and being surrounded by the conductor for ground, and insulating between the conductor for signals and the conductor for ground; a lower body; and an upper body coupled onto the lower body. The conductor for signals includes a lower portion protruding below a first portion of the top of the insulator, a middle portion inserted into a hollow portion of the first portion, and an upper portion protruding above the first portion. The conductor for ground includes a lower portion protruding below the first portion and an upper portion surrounding the first portion. The lower body includes a lower housing, such that the upper portion is accommodated in the hollow portion.

Abstract: A refrigerator includes a refrigerating room, a vegetable room, and a vegetable box movably disposed in the vegetable room. The vegetable box includes an air inlet and an air outlet. A duct disposed on a wall of the vegetable box interconnects the air inlet and air outlet. A blower disposed in the duct circulates air from said outlet to said inlet. The duct carries seals which form air seals around the inlet and outlet when the vegetable box is closed. Temperature sensors automatically turn the blower on and off. A channel extends along a wall of the vegetable box and includes through-holes. The channel communicates with the air outlet.