There are two concrete tiles coloring method

Update:15 Nov 2017
Summary:

First: the color coloring layer is formed of cement and […]

First: the color coloring layer is formed of cement and inorganic pigment, resin and silica aggregate thickness is about 0.5mm. It has strong adhesion (and tile made at the same time), weather resistance in general, after a certain period of sunshine and rain easily fade. Most of the old tiles and small tiles are painted in this way, because the cost is low;
Second: the paint spraying, spraying color bright, general spray dry film thickness of about 35um or more, after years of use, for a long time does not change color off. When the discrimination is first observed, the former has a certain thickness from the side and the end, and the latter is very thin, and the spray point of the paint can be seen.

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