I got polished porcelain stoneware and it has hardly any shine.

When it is polished, porcelain stoneware has surface micro-porosity which makes it less resistant to stains. Margres porcelain stoneware is factory-treated with a sealant to prevent this problem. This sealant protects the surface of the material during application and ensures waterproofing to protect against staining during use.

When the project has been completed, the tiles should be cleaned of all dirt and the surface waterproofing layer removed in order to restore the original sheen of the tiles. To do this, we recommend cleaning with a slightly abrasive brush or scouring pad, using a neutral detergent or cellulose thinner solution or by applying a specific product.

Link to tables with examples*:

(*) The products of the companies mentioned are merely examples. There are many other companies, besides those mentioned, that have similar quality products.