There are reliable and unreliable recruitment places. You have to identify them by yourself. Some places that obviously pay much higher than the market price are unreliable.

Another way is that there is usually a place similar to a village in the city in the industrial zone, where migrant workers can rent houses and eat. Find a small vendor or a small restaurant, buy something or have a meal, and they will tell you all the information they know. After all, they often deal with employees in this area, and their information is more reliable than yours.