Botou Jinchang marble square box

< . > (,,): '' b>Marble Square Box
(,,): ''.>The material is Jinan Qing, the granite has black luster, precise structure, uniform texture and stability It has good performance, high strength and high hardness. The working surface adopts scraping or precision grinding process and is used to measure the straightness and verticality of the workpiece and equipment installation.
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< . > (,,): ''.>The marble square box has a dense organizational structure, smooth and wear-resistant surface, and roughness value Small, after long-term natural aging of marble, the internal stress completely disappears, making the material stable and not deformed. Since marble is a non-metallic material, it has no magnetic reaction and no plastic deformation.
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(,,): ''.>Marble square box has high precision, no rust, acid and alkali resistance, no magnetization, no deformation, and wear resistance It has good advantages and can remain stable under heavy load and normal temperature. The marble square box is a precision benchmark measurement tool made of natural stone materials. The granite material has undergone rigorous physical tests and selection. It has fine crystallization and hard texture. It is an ideal choice for the inspection of instruments, precision tools, and mechanical parts. ideal datum.
(,,): '' >Marble square box
(,,): ''.>It is superior to precision measurement reference parts made of high-quality cast iron and steel, and can achieve high and stable accuracy. Even if it is bumped by heavy objects during use, at most a few stones will fall off. It will not affect the accuracy of use.