Jiukesong floor adopts high-density fiberboard and masson pine wood produced by Jiufiona Font Board Co., Ltd. Compared with other materials, pine fiber is the best and has certain flexibility. This new type of flame retardant plate is made of European flame retardant and international advanced production technology. The board has overall flame retardant performance, can withstand the high temperature of 1000℃- 1200℃, and has good flame retardancy. The oxygen index is above 40%. The bottom layer is balanced paper, the base layer is masson pine, and the surface layer is decal paper and wear-resistant paper. Wear-resistant paper reaches 46G, which can reach the national standard, and the wear resistance is more than 6500 revolutions. The whole floor adopts advanced circular trimming molding technology. Firstly, the large substrate is cut and shaped according to a fixed size, and then the periphery of the cut and shaped small substrate is polished into a circular trimming structure. Then wear-resistant paper, wood grain paper and balance paper are covered on both sides of the cut substrate in turn, and then put into a small special press for molding. After the floor is manufactured, the wear-resistant layer on the circular cutting edge of the floor will be closely combined with the base material layer like the wear-resistant layer on the floor surface, thus avoiding the defect that the notch of the large board molded floor is easy to collapse, greatly improving the wear resistance and service life of the floor, and greatly enhancing the three-dimensional sense of the floor. The floor strip is clearly defined, the friction area is increased, and there is no gap caused by secondary processing between the plane and the circular section, so the anti-skid and moisture-proof are more prominent. In addition, the stress of this circular trimming chamfer conforms to the arch structure of human feet, which has excellent foot feeling, tight seam combination, difficult dust accumulation and convenient cleaning.