Prior knowledge of selection methods and standards China's stone is divided into three categories according to the level of radioactivity: A, B, and C. According to regulations, only Class A can be used for home interior decoration. There are two types of stone, marble and granite. The radioactivity of marble is generally lower than that of granite. Most of them can be used for interior decoration. Granite should not be used in large quantities in the room, especially in the bedroom, the elderly and children's rooms. . According to the test, the radioactivity of different colors of stone is also different, the highest is red and green, and the lowest is white and black. Therefore, consumers should be careful to choose red, green or granite with red spots.
When signing a contract, the invoice contract and invoice are important guarantees for rights protection. Consumers should require the seller to specify the name, specification, grade, quantity, and price of the product in the contract, and to specify which standard should be used for testing. It is best to ask the seller to provide a certificate of product qualification, an inspection report certified by the statutory authority, or a product radiation certificate. Conditions allow, it is best to send the sample to the testing department for testing. Nowadays, the so-called "international A-class" and "extraordinary-grade" stone products appear on the market is a way for some manufacturers to mislead consumers. Consumers should pay attention to prevention.
Diluting the pollution method after laying The harmful half-life of radon is only 3.2 days. The indoor radon concentration can be reduced to the outdoor level after 20 minutes to 30 minutes after the door is opened. Therefore, the easiest way is to increase ventilation. The room that has just been renovated is best able to be tested. If the test structure is unqualified, you can use radiation-reducing paint or install lead-free protective plates to prevent the release of cesium from building materials. If the radioactive index is too high, the stone must be replaced immediately.
When signing a contract, the invoice contract and invoice are important guarantees for rights protection. Consumers should require the seller to specify the name, specification, grade, quantity, and price of the product in the contract, and to specify which standard should be used for testing. It is best to ask the seller to provide a certificate of product qualification, an inspection report certified by the statutory authority, or a product radiation certificate. Conditions allow, it is best to send the sample to the testing department for testing. Nowadays, the so-called "international A-class" and "extraordinary-grade" stone products appear on the market is a way for some manufacturers to mislead consumers. Consumers should pay attention to prevention.
Diluting the pollution method after laying The harmful half-life of radon is only 3.2 days. The indoor radon concentration can be reduced to the outdoor level after 20 minutes to 30 minutes after the door is opened. Therefore, the easiest way is to increase ventilation. The room that has just been renovated is best able to be tested. If the test structure is unqualified, you can use radiation-reducing paint or install lead-free protective plates to prevent the release of cesium from building materials. If the radioactive index is too high, the stone must be replaced immediately.
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