What is rational usage of natural stone and how to prevent and eliminate the radioactive contamination it from the office and home decoration?

The keys may be the following points:

1. In determining the renovation programme, it is necessary to choose stone carefully and you'd better not use large stones in a bedroom and the elderly, patients or children's living room.

2. In the market to buy stone, radioactive products of distributors request certification, please choose stones according to stone's radiation levels.

3. Attention should be paid to know some of the methods of choice and standards. For example, under normal circumstances the radioactive stone differs from the color. Its radioactivity descends in order of red, green, red meat, gray, white and black. For instance, the radioactive granite is generally higher than marble.

4. Of course, the most scientific and effective way is to ask the experts and to use advanced equipment to detect radioactive stones.