It's cold, how to keep the take-away bento warm?

Oh, there is a lunch box heat preservation cabinet. The take-away lunch box heat preservation cabinet is divided into single doors and double doors, with super-large liner capacity, which can meet all kinds of food heat preservation requirements. The cabinet body is forged with national standard 34 stainless steel, and the high-density polyurethane fully foamed cabinet body is highly efficient in heat preservation. The hot air circulation heating system heats quickly and evenly, which solves the problem that the take-away lunch box cannot be kept warm. The warm dish cabinet for take-away lunch boxes is designed with universal wheels, which is convenient to push and pull!