Wristbelt card is also called watch card. Besides daily use, it also plays a very important role in industrial production. The wristband used in production is called anti-static wristband. In the medical industry, hospital inpatients also wear wristbands for identification. Widely used in swimming pools, bathing centers, waterproof patrol, attendance management, etc., to adapt to wet and high temperature harsh environment such as field operations; disposable wristbands are mostly used for hospital patient management.