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Is Lan Shihua tired of grinding?

Tired.

1, working environment. According to the inquiry of official website of China Petroleum Lanzhou Petrochemical Company, the polishing machine mainly removes burrs on the surface of the product workpiece to make it smooth, which is a dust-contacting job, which is rather tiring.

2. Working hours. The polishing machine of Lanzhou Petrochemical Company of China Petroleum works for more than 8 hours, which is very long and tiring.