Defective surfaces, holes, joints, and cracks in stone are problems that occur after marble and various stone materials have been used for a long time. Experts explained that in order to carry out professional repairs of these problems, professional technical means must be carried out. First, repair the defect surface After the long-term use of marble stone, it is inevitable that there will be a defective part. In the repair of the marble defect surface, the defect part must be cleaned and vacuumed with a vacuum cleaner, and then discarded stone of the same quality discarded, the discarded stone should also be cleaned. Cut into the size of the defect, seal it, and then polish and polish. Second, repair the hole surface The stone hole is also a defect part formed by the stone after long-term use. Of course, the hole part must be cleaned before the marble hole is repaired, and then the dust is sucked out by the vacuum cleaner, and then the discarded stone of the same quality is crushed, and the discarded stone is also required. Clean up, mix with resin glue to fill, fill it is slightly higher and stone surface 3~4mm, wait for the resin glue to dry thoroughly, then use a sander to smooth and wait for renovation. Third, repair the stitching seam Some stone will have seams in the process of laying. The joint between stone and stone is not strictly treated, which will inevitably result in a black seam between stone and stone. Black seam must be made before renovation. Use a stylus, a blade or a slitting machine to clean the black seam, then use a vacuum cleaner to clean the dirt in the black seam. Finally, use a strong glue to adjust the color close to the stone to fill the gap (slightly high stone 0.2mm) . Fourth, repair cracks Crack is also one of the problems that occurs after the stone is used for a long time. To repair the crack of the marble, the dirt in the crack must be cleaned first, then the dust in the crack is exhausted with a vacuum cleaner, and finally the crack is repaired with a crack. The crack is repaired. PVC is a white powder with an amorphous structure. The degree of branching is relatively small. The relative density is about 1.4. The glass transition temperature is 77~90°C. It begins to decompose at about 170°C. It has poor stability to light and heat. After prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, and further automatically catalyze the decomposition, causing discoloration, and the physical and mechanical properties also rapidly decline. In actual applications, stabilizers must be added to improve the stability of heat and light. PVC RESIN SG8, PVC RESIN K57, PVC RESIN for Pipe Fittings Henan Shunbang Chemical CO.,Ltd , https://www.pvcresinchemical.com