It is well known that when undergoing X-rays, CT scans, and other examinations in hospitals, unnecessary exposure may occur due to a lack of protective measures. However, some consumers are unaware that some metal products are made from contaminated and radioactive metals. For example, a scrap iron zipper key is one example.

If waste metal with excessive radiation is made into commonly used accessories such as backpack zippers and keychains, it will cause a certain degree of harm to the human body, leading to diseases such as leukemia and thrombocytopenia. Because consumers cannot recognize the presence of radiation sources in metals solely with the naked eye, they can purchase corresponding small radiation devices for testing at home. Secondly, it should be noted that all X-rays can have a certain impact on the human body. Children under the age of 14 and pregnant women should avoid physical examinations under light as much as possible. When taking photos, they should observe whether there is a "under light" light box on the top of the anti radiation door, whether the light is on, whether there are anti radiation warning signs on the door, whether medical personnel and testing personnel are equipped with personal dosimeters on their chest, and whether citizens can observe with the naked eye in front of photos.