Epaulettes are symbols worn by police and soldiers on the sleeves and upper arms of military uniforms to show their identity, service and other information. Generally worn on the left arm, the shape is shield, rectangle, diamond and so on. Generally, it is a computer embroidery product. The rectangular armband on the sleeve is also called armband or armband. The 07 military uniform of the Chinese People's Liberation Army uses armbands as an important symbol to identify services.