Suggestions on stone selection

1. The stone has a radioactive certificate. Please ask the dealer for it when you buy it. Don't buy without a certificate. At the same time, pay attention to the choice of Class A products for home decoration.
2. In the selection of marble and granite, marble should be considered first. Under normal circumstances, the radioactivity of granite is greater than that of marble.
3. Generally, the consideration of stone materials should be black, gray white, flesh red, green and red. From the perspective of radioactivity, the order from high to low is: red>green>flesh red>gray white>white>black, basically in this order.