2. The main suppliers of box lunch are students, employees of factories and institutions and patients in hospitals. The price is the highest in 4- 12 yuan, and the color and nutritional content of the dishes change with the price, including main courses (such as fried pork ribs and chicken legs), semi-meat dishes (eggs and shredded pork) and vegetarian dishes. More than 90% of box lunches are served as lunch at noon, and the prices are reasonable. The only shortage is that the box lunch industry is gradually getting rid of the preparation methods of kitchens in the past, and starting with improving the working habits and working environment of the handlers, adopting institutionalized procurement and scientific production systems in order to achieve the expected nutrition and health goals.