Not much to say, we look directly at the result. In the conclusion of this paper, the effect of building materials (natural stone, etc.) used in family decoration on indoor radon is not important.

The United States Environmental Health and engineering company based on the detection of radiation emission of natural stone, in the part of conclusion suggested, "in this sense, the United States has not established exemption standards construction of radioactive materials based on, the European Commission proposed building materials (natural stone) shall not be subject to any restrictions on the radioactive. (At this level, the European Commission recommends that building materials should be exempted from all restrictions regarding their radioactivity. The United States has not established an exemption level for building materials based on radioactivity to our knowledge)."

Karen tells us that there are too many research reports about stone radiation. The search radon on the official website of American marble Association will download and read www.naturalstoneinstitute.org. The international authoritative report is believed to be more able to eliminate the doubts in the hearts of many consumers. In fact, the domestic stone industry has also been a number of voices, joint efforts to crack stone radiation rumors.

Experts at home

Zhu Liceng, a professor of Tsinghua University and a radiological expert, is in the CCTV program. Is it true? The field obtained the conclusion that the radiation of marble is very low by testing, and made a statement: "marble radiation index is extremely small, so it can be ignored."