掂: Hand rubbing bricks, the hand feels heavy and the bricks have high density and high hardness; otherwise, it is worse.
Stroke: Try to scrape the glaze with a hard object. If there is a scratch, it indicates that the quality of the glaze is not good and the hardness is not enough. In this case, after the glaze is polished, the brick surface is easy to be soiled and difficult to clean.
Knocking: Tap the surface of the antique brick by hand. If the sound is crisp and loud, the tile quality is good and cooked. If the sound is abnormal, the sintering in the tile is not good and there may be internal cracks.
Look: Look at the section: the section is denser. Look at the surface: the surface reflection is natural. Look at the color: the more the color changes, the more harmonious the application, suitable for large-scale overall paving, to create a harmonious atmosphere of aesthetic effects, of course, must match the overall style of the home.
Drop: The simplest operation to test the water absorption rate is to put water droplets on the back of the tile. The water absorption rate is low, and the product with good internal quality will not have water droplets soaking or spreading, and vice versa. Jinyitao antique bricks have a water absorption rate of less than five thousandths, and the bricks are compact and of good quality.
Painting: Use a colored pencil to scribble on the front of the antique brick. After a while, wipe it with a damp cloth. If the light is as fresh as leaving no trace, it indicates that the brick is highly resistant to dirt. Usually it is easy to take care of.
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