All machine tool bases of Sunway are made of high-strength cast iron and undergo double-aging treatment, which effectively releases internal stress and ensures long-term structural stability without deformation. The guideways of each piece of equipment are always hand-scraped, which takes over 8 hours per unit, guaranteeing the long-term maintenance of geometric accuracy. Although this traditional craft has been simplified or even abandoned by many peers, we have always adhered to it because it is truly effective.