Salted fish. According to relevant public information, second-hand goods can be purchased at Idle Fish, which is a second-hand trading platform certified by the Industrial and Commercial Bureau and the Network Supervision Bureau. Buyers and sellers can chat directly, and there are old refrigerators in the same city. Refrigerator is a kind of refrigeration equipment to keep a constant low temperature, and it is also a civilian product to keep food or other items at a constant low temperature.