How to distinguish between good and bad tile?

23 Jan 2018 -
Look Origin: Jiangsu, Zhejiang region of production of more advanced equipment and technology as well as more stringent election materials, more reliable quality, high brand awareness, the other major producing areas tiles are: Guangdong, Shandong, Sichuan, Fujian look at the surface: including, tile gloss and color performance of the (suit), to see whether the impurities between spots, bubbles, pinholes, the color of the bricks or without bias (except special treatment patterns, such as roller printing products for the pursuit of a natural stone texture effects, Each piece has the distinction brick look tile pattern texture: good products are generally relatively high firing temperature, the product relatively dense, knock up the sound more crisp look tile size: uniform size, the size of each brick (non- milling products should be less than 0.5% of the side length, milling products should be less than the side length of 0.2%) see brick flatness: Take a few pieces of brick on relatively standard plane, look between the bricks have no significant deviation level
"Look": a look at grades, superior product best, third-class products and substandard goods are worrying; Second, look at the appearance and glazed tile good without bulging, Qiaojiao and other issues, while facing flat glaze smooth surface, no particles or color shades of the phenomenon; Third, look at the pattern, the pattern to be fine, no color leakage, dislocation, disconnection or shades.
"Listen." To hand thumb, forefinger and middle finger clip tile corner, easily dropped, the other hand index finger tapping in the lower part of the tile, such as sound clear, sweet for the top grade, such as sound dull, astringent cloud is defective.
"Cut." Cut tile fragment (generally observed to have been broken in pieces to the store), see breaks. Breaks dense, hard and brittle, the same color for the top grade.
"Water." The drop in the back of the tile, the water infiltrating slowly spread tile density, regarded as the top grade.

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