What about the intaglio printing apprentice?

Not so good. According to the query, the public life network shows that.

1, hard work, small customer base, the result is far lower than the effort.

2. If offset printing has a strong smell of gas and oil, it will take more than a year to become a captain. If it is gravure printing, it will take one year. It is better to be a captain diligently. If you are seventeen or eighteen, you'd better not do printing.