Doing canteen contracting is really quite lucrative, Shanghai this side of a lot of such companies, such as WanKang catering are professional to do this, is certainly profitable, the general situation of large canteens will require proof of qualification, it is the company business license, code certificates, health permits, these things, generally small canteens may not require, for the source of profit, I think it should be the procurement process, the more people, the more purchases, the lower the meal standard, it does not matter, as usual, earn money! The more you buy, the more you purchase, the lower the price of the meal, it doesn't matter, it's still money.