Industry 4.0 automation intelligent manufacturing
Industrial 1.0 mechanization, marked by steam engines, replaced human labor with steam powered machines, separating handicrafts from agriculture and officially evolving into industry.
Industrial 2.0 electrification, marked by the widespread use of electricity, replaces steam power with electric driven machines, achieving division of labor in component production and product assembly, and entering the era of large-scale production in industry.

Industrial 3.0 automation, marked by the application of PLC (Programmable Logic Controller) and PC, has not only taken over most of human physical labor, but also a part of mental labor. Industrial production capacity has surpassed human consumption capacity since then, and humanity has entered an era of overcapacity.
To understand Industry 4.0, we need to first take a look at the current situation, which we call Industry 3. X, in the trendy description of the cultivation novel, that is, the mid to late stage of 3.0, this state is called complete automation and partial informatization.