Want to open an oil mill to make money?

As long as you look at the location, if there is a large passenger flow, it will be fat and oily. Tell me about the ones around me. I am in Nanjing, and there is a farmer's wholesale market nearby. There is also a workshop that squeezes oil on the spot, which is not big, just 2 square meters. People queue up to buy oil every day, and it is still extremely expensive. You can't make money! ! !

I wish you good luck. If you are satisfied with the answer, please accept it. It is not easy to help others these days. Encourage enthusiastic people ~ ~ ~ ~ ~