How to detect fake goods in Corin industry

Grade 4 Corin is often curved and arched with a very disgusting odor and numerous pores on the back and upper surface. Its consumables are mineral and of very low quality. And they are very brittle.

Grade 3 Corin is a product whose main ingredients are mineral, opaque and opaque, with high adsorption and very brittle.

Grade 2 Corin is a combination of Grade 1 and 3 Corin.

Grade 1 Corin’s ingredients are pure, clear and shiny, especially light-transmitting, flexible and refractory.

It should be noted that all codes with dark colors and some other codes due to excessive consumption of dye and grains, its light transmission reaches zero, which is one of the exceptions in the above cases.

Therefore, according to the above points, you can easily ensure the quality of the product.