The first purchase of brand ceramic tiles should be best available to the brand store.
Second out of product packaging identification. If you see the outer packaging of the product is rough, you should be careful.
Third should be identified from the appearance of the product. The surface roughness and smoothness of the brick body on the inferior tile are very poor, and the consumer generally can observe the glaze of the brick with the naked eye.
Fourth from the tile size identification. Measure the sample with a small size, and compare with the size on its package, if the error is large, it shows that there is a problem.
Fifth, it can also identify the authenticity of the manufacturer's address from the manufacturer's address.