How long does it take to learn the mechanism charcoal technology?

The technology of machine-made charcoal is not complicated, but it also needs some understanding. The average person can learn it in two months, but if you want to burn it well, you can't do it in half a year. You need a good master to take care of it. At present, most charcoal sellers are responsible for training, but they are only limited to theoretical knowledge and some simple operation steps. If they want to learn technology well, they'd better learn from a teacher for half a year, which is the best.