The stone surface of the table is covered with a plastic film. Why do you wrap the film?
According to your description, stone should be marble, the name is rosin yellow. The film is used for waterproofing and anti oil. I don't know if you're a natural stone, but if it's natural stone, there are traces of radiation.
Some plastics have anti ultraviolet radiation effect I think the film in addition to the stone table to prevent UV caused by radiation and its color changes in addition to outside role waterproof function is to prevent the stone table and water have led to reflect the changes affecting the appearance color quality
But the table is generally used in beige stone production, and a resin film, the radiation does not matter, it is worth reminding that the surface of a resin film is afraid of high temperature and strong impact will be broken, it is very difficult to repair, maintenance must be by the manufacturers to.
The stone table has two kinds of natural stone and artificial stone, plastic film on the surface of resin film, to prevent the penetration and scratches, of course, the dining table is mainly impermeable to water, oil, natural stone, artificial stone to radiation than high