Are smelters in Hexi Silicon Industry Manual Workers?

The smelting work of silicon industry in Hexi usually belongs to high temperature and high intensity work, which requires loading and unloading of burden, operation and maintenance of smelting equipment. Therefore, smelting can be said to be a physical activity. Moreover, smelting work usually needs to be carried out in harsh environment, such as high temperature, high humidity and high dust working environment, which requires high physical conditions and physical strength. Therefore, the smelting work also puts forward certain requirements for the physical strength and physical quality of smelting workers.