1: At present, the principle of most dyeing techniques is chemical reaction, and most of the dyed pigments are made from oxalic acid, sulfuric acid, pigment and so on. There are iron oxide colored material brush to the stone surface, not easy to fade.
But the color produced by chemical spraying of fake stone usually in one or two years began to fade, especially through the windows, cabinets, harmful chemical dyes containing benzene is easy to stick to food and clothing.
As the ground Shicai dyed stone in bleaching process, benzene, formaldehyde and other harmful substances in the dye will gradually evaporate, indoor air pollution, cause certain harm to the health of their families.
2: The difference between the dyed marble and the natural marble:
(1),The most direct and effective way of distinguishing is to take a look at the side or incisions of stones, and we can clearly find the layers of dyeing stone penetration, with deep surface color and shallow middle color.
(2), Dyed stone usually hit a layer of wax, as long as the lighter to bake the surface of the stone, see the wax melted, it is likely to be dyed.