When was the old industrial base in Northeast China formed?

In fact, it sprouted after the Liaoshen campaign. At that time, the Japanese Kwantung Army left a large number of industrial products and arsenals in the northeast, and the resources in the northeast were also relatively rich. Later, in the first five-year plan, FAW, Angang and other state-owned factories produced in the northeast, becoming the main industrial base in China. Later, as Shen Fei and other high-tech industries settled in Northeast China, the status of the old industrial base in Northeast China was further established.

Yes, it's on the second floor. It should be during the First Five-Year Plan. 1953- 1957.