What small business is the most profitable?

In big cities, I think the recycling of second-hand household appliances is a very good business, and many people are disdainful, because it is no different from collecting garbage. However, it is such a small business. In the current market, if you do it well, you can really make a lot of money. I know a friend who just arrived in Xinjiang. When he rented a house, he bought a small refrigerator for more than 9 yuan. Later, when he moved, he didn't want it, so he asked what the recycling price was. Guess what? It's only over 1. A few days later, I asked a friend from other places to ask how much it would cost to buy this refrigerator from a second-hand dealer. As a result, he bid, 6 yuan, every penny, and said that he would not make money. At present, there are too many renters in the city, who often move their homes around. Therefore, there is no shortage of sources and customers for second-hand old household appliances. It is this purchase and sale that makes operators earn a lot of money. Some people in the society who set up stalls in the business circle immediately think of urban management when they mention setting up stalls in the city. In fact, this is just an excuse for their laziness, because there are too many stall merchants in the business circle and corners of the city, and they are all thriving. I know a couple who have been running a cold rice noodle stall in the business circle. In recent years, he has really made a lot of money, relying on a stall. Cold noodles with cold skin, its skin is smooth, fresh and tender, salty, spicy and refreshing, and it has the effects of relieving fatigue, relieving summer heat and eliminating dampness, which is very popular among the public. Cold rice noodles are very popular in hot summer. Especially in the city business circle, during the rush hour, the boss's business is too busy. Cold rice noodles are made of cold rice noodles, tender bean sprouts, peanuts, cucumbers and other ingredients. The production cost of a bowl of cold rice noodles may only be 2~3 yuan, but the food stalls outside can at least be sold to 5~6 yuan, with a profit rate as high as 1%. If you can sell 2 bowls a day, you can make a net profit of six or seven hundred yuan, and your monthly income can be as high as 2 thousand. Tea shop in downtown street Tea shop has become more and more prosperous in recent years, but its business is still very hot, because milk tea is popular among men, women and children. The highest sales volume of all drinks is milk tea, and the profit of milk tea is also the highest. Young people easily earn hundreds of thousands. A young entrepreneur friend I know has opened a special milk tea shop in Shenzhen. Because it is located in the downtown area, its products and materials are also more particular, and its taste is aimed at young people, which is quite fashionable. The clerks are all younger sisters, fresh and tender. It is such a milk tea store with millions of profits a year. Tea shop, the cost of a cup of milk tea is less than that in 1 yuan, and the price is both in 1 yuan and 2 yuan. At this price, buyers sometimes have to queue up. How high is the profit? Supermarket mobile phone repair counter This is also a small business that everyone is used to, and many people despise it, in fact, they make a lot of money. The annual income of repairing mobile phone shops in large supermarkets can reach about 1 million after removing costs. This is a technical job. Mobile phone repair. One is to escape from prison, and one 8 yuan is charged, and customers still feel very happy. Work like this only needs to help people simply move their hands and click the mouse, and there is no cost; The second is the mobile phone film, which is more profitable. It is divided into imported films, diamond films, blue-light films, etc., which are available in 8~15 yuan, and its cost price is almost a few dollars; The third is to change the mobile phone screen, which has not been repaired yet, that is, 2~3 yuan, plus the mobile phone case is more expensive. So don't underestimate the businessmen who repair mobile phones in the supermarket, because they may earn much more in a month than you do in a year. These small businesses are commonplace in the market at present, and many ordinary people are doing them, which seem inconspicuous, but actually make a lot of money. Therefore, for an ordinary person, if you want to do a small business, you must first segment the market, and there are definitely opportunities, because where a person's heart is, there is wealth.