Inspection And Maintenance of Marble And Granite Squares Maintenance should be carried out every 6-12 months, but at least once a year. When cleaning the Marble and Granite platform, use minimal water. Then wipe and polish it with a clean soft cloth. The Marble and Granite platform material is fragile and afraid of impact from hard objects. Therefore, pay attention to preventing heavy objects like iron from smashing the working surface, avoiding pits that may reduce the platform's usability.