Natural stone can be a health killer. The results of the quality supervision and inspection of natural granite and marble released in the fourth quarter of 2003 indicated that the marble sold in the Chongqing market has basically no radioactive hazard. However, when the public chooses granite, they must be careful. Qualified products are all granite. Chongqing Product Quality Supervision and Inspection Institute recently conducted quality supervision and spot checks on 124 batches of natural granite and marble sold in Shiqiaopu Stone Market and Luyunshidu Market, the two largest stone markets in the city. 94.4%, of which, the sampling rate of granite is 91.5%, and the sampling rate of marble is 100%. During the spot check, it was found that some products with serious radioactivity exceeding the standard were still sold in the market. For example, the granite sold by Chongqing Yuantai Imported Stone Factory (California Golden Hemp) was 1.7 times higher than the national standard. According to the relevant personages of the Municipal Quality Supervision Bureau, stone products with serious radiation exceeding the standard can only be used for exterior finishes of buildings, etc., and living in the environment where such stones are laid for a long time will cause great harm to the human body. Multipurpose Retractrable Snapoff Cutter Knife Easy Cut Utility Knife,High Quality Utility Cutter Knife,Auto Lock Utility Cutter Knife Shangqiu Acer Measuring Tool Co.,Ltd. , https://www.acertoolshn.com