Which mine under Kailuan Group is better, urgent ~

Hello! I am from Kailuan! If we want to say that the benefit is the best and the coal is the most, it should be Qianying Mine, which can produce about 5 million tons of coal a year! Followed by Fangezhuang Mine and Lujiatuo Mine, the benefits are also good! It's from Kailuan Clean Coal Company! Fangezhuang can produce more than 4 million tons of coal a year, and Lujiatuo can produce less than 400W tons of coal a year! Among them, there are more clean coal! Whether you want to enter Kailuan depends on whether you are a technician or a worker. If you are a technician, it is absolutely right to go to these three mines! If you are an ordinary worker, it depends on your position! I hope I can help you!