Granite surface plate is made of high quality stone by mechanically processed and hand grinding. It is black and gloss, structural precision, even texture, good stability, high strength, high hardness. It has high precision and difficult to deformation, acid rot, does not rust, easy maintenance and other advantages. It can be maintained accuracy under heavy duty and general temperature, these are not available in cast iron platform. Therefore, granite platform price is slightly higher than cast iron surface plate.
Decision of granite platform price is the price of stone selection, the price of high-quality granite platform is different from poor granite platform.