How long can a chain printer learn?

Printing machine growth summary can be studied for more than three years. In the packaging and printing industry, printing is the most technical process, and it takes three years or more from apprenticeship to becoming a captain. At present, color printing machines are highly automated. If a master is willing to teach technology in a company with relatively large production capacity and wide business, and he is willing to study hard, he is not afraid of being dirty and tired, and it is possible to learn it in three years. After all, everyone's learning ability will be different.