Precision machining is realized by using precision machine tools, precision measuring tools and meters under strictly controlled environmental conditions. Ultra precision machining is called ultra precision machining when the machining accuracy reaches or exceeds 0.1 micron. When many enterprises build new factories, what kind of industrial floor to choose has become one of their biggest headaches, especially Dalian mechanical processing enterprises. As a heavy industry, precision machining manufacturers and enterprises have the characteristics of poor service environment, dragging of goods, impact of tools, rolling by forklift, equipment vibration, oil penetration, scrap iron wear, etc. Therefore, they require high floor strength, compression and impact resistance, anti penetration, clean ground, no dust and sand, wear resistance, easy maintenance, long service life, etc. In machining, machine tool, fixture, workpiece and cutting tool constitute a complete system, which is called process system. Due to the structure and state of the process system itself, the operation process and the physical and mechanical phenomena in the machining process, various factors that cause the offset of the relative position relationship between the tool and the workpiece are called the original error. It can be reflected to the workpiece in the same way, enlarged or reduced, so that the workpiece has machining error and affects the machining accuracy of parts.