Lead has a high atomic number, is dense, is cheap and is not inherently radioactive, so it is suitable as a protective material. Radiation-proof lead products include lead plate, lead door, airtight door, lead screen, lead glass, lead coat, lead room, industrial flaw detection room, nuclear magnetic resonance shielding room, etc. Mainly used in hospital radiology X-ray room, CT room, ICU department, CR/DR Room, mammography room, orthopaedic X-ray room, oral clinic, dental clinic, animal hospital, pet hospital, and some scientific research unit laboratories.