Li Jianjun is a low-key person who sticks to his true nature, silently shouldering the burden of his family and never slacking off in his deep technological advancement. Millions of imported precision machine tools suddenly broke down in the factory, and a group of professionals were unable to overcome the problem. In the face of doubts and prejudices, Li Jianjun stepped forward and relied on his solid and superb practical skills and years of accumulated professional experience to successfully repair precision machine tools, optimize and upgrade equipment accuracy, and break through the industry's technical barriers. Later, he also took the lead in building a technology research and development platform, devoted himself to studying and cultivating craftsman talents, and adhered to the craftsmanship throughout his life, eventually becoming the extraordinary craftsman spirit of a great country.
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