在商品经济下,顾客的消费习惯和消费需求,决定了商品的发展方向。从食品来说,超级市场出现了将水果和蔬菜切成片,冷冻食品货架上出现了预加工封装食品袋,非速冻微波包装蔬菜,分个人用小包装和饮食业的小包装。这种蔬菜不含防腐剂,用透明塑 In the commodity economy, the customer’s spending habits and consumer demand, determines the direction of the development of goods. From the food standpoint, supermarkets saw the slicing of fruits and vegetables, pre-processed packaged food bags on frozen food shelves, non-frozen microwave packaged vegetables, small packs for personal use and small packs for the catering industry. This vegetable does not contain preservatives, with transparent plastic