我想知道中國從1949年到現在的工業發展

From 1949, Chinese government focus on investment in infrastructure and heavy industry. There were a lot of big scale projects in building roads, bridges, railways and dams. The light industry was not properly developed.
During the Great Leap Forward period, there were suddenly a lot of poor quality steel mills appeared. These still mills were eventually closed.
After cultural revolution and the reformation of China, Hong Kong investors brought in a lot of light industry such as clothings, electronics, etc. China eventually becomes the factory of the world.
Nowadays, China starts to focus on service industry and tourism.
In order to support the development in light industry and service industry, China continue investing in infrastructure.