Caractéristiques des plates-formes de guidage en granit
I. Material and Long-term StabilityNatural aging, extremely low internal stress: High-quality granite (s Jinan Black) undergoes geological aging over hundreds of millions of years, releasing internal residual stress. After precision machining, there is almost no slow deformation, and the precision retention cyc is long (no major overhaul or calibration required for 5–8 years), far superior…