If you want to wet grinding, first moisten the concrete surface to be ground. It is best to do this in sections. It is best to use a concrete floor grinding and polishing machine with a planetary counter-rotating disc. The grinder used needs to be equipped with a water tank. Xingyi’s grinder can be used for both dry and wet grinding. We only need to fill the water in the water tank to perform wet grinding on the ground. . Then operate the machine side by side slowly, and then make a circular motion until the ground is completely ground and smooth.