Some natural stone've talked in the article also has some radiation, then teach you today how to prevent this hazard. In fact, radiation is everywhere in life, we can not put all the blame all attributed to natural stone, when you do not know or know if you live in the radiation, the best way is to keep indoor air flow, window ventilation to keep indoor air every day fresh, fresh, half an hour before sleep windows, interior ventilation, pollutants and radiation will all disappear with the wind. Sesame white board stock a large number of low-cost treatment to burn as follows: 300 * 600 * 2.5: 37 yuan / square, 300 * 600 * 50: 45 yuan / square. Curb: 800 yuan / cubic Order. Road calculus http://www.nyzfsy.com