Why are granite platforms black?

Granite platforms are made from high-quality “Jinan Blue” stone through machining and hand-grounding. They feature a black luster, precise structure, uniform texture, excellent stability, high strength, and high hardness. They maintain high precision under heavy loads and at moderate temperatures. They are also rust-resistant, acid- and water-resistant, wear-resistant, non-magnetic, and non-deformable. Granite platforms are suitable for measuring tools in machinery factories. Made from high-quality natural marble, they are machined and hand-ground. They feature a black luster, precise structure, uniform texture, excellent stability, high strength, and high hardness. They are also rust-resistant, acid- and water-resistant, non-magnetic, non-deformable, and wear-resistant. They maintain stability under heavy loads and at moderate temperatures. Granite platforms are precision reference measuring tools made from natural stone. They are ideal reference surfaces for inspecting instruments, precision tools, and mechanical components. Their unique properties make cast iron platforms pale in comparison. Granite platforms are precision benchmark measuring tools made of stone.

They are ideal for inspecting instruments, precision tools, and mechanical components. Granite platforms are particularly suited for high-precision measurements. Granite is sourced from underground rock layers and has undergone millions of years of natural aging, resulting in an extremely stable form. There is no risk of deformation due to normal temperature fluctuations. Granite platforms are made from materials carefully selected and subjected to rigorous physical testing, resulting in fine crystals and a hard texture. Because granite is a non-metallic material, it exhibits magnetic properties and exhibits no plastic deformation. Marble platforms have a high hardness, resulting in excellent precision retention.

Many users ask why granite platforms are black. Natural granite contains mica. The friction between diamonds and the mica produces a black substance, turning the gray marble black. This is why granite platforms are naturally gray in rock but black after processing. Users have increasingly higher requirements for the quality of precision granite platforms. High-precision workpieces can be inspected with them. Granite platforms are most commonly used in factory quality inspections, and are also the final checkpoint for product quality in the factory. This shows the importance of marble platforms as precision measuring tools.