2. The flat button of the badge can only be forcibly opened, and there is no other way. Buckle is an embedded connection or integral locking mechanism between one part and another, which is usually used to connect plastic parts, and its material is usually made of plastic material with certain flexibility.
3. When wearing the badge, open the horse needle at the back of the badge, and then fasten it on the left chest of the clothes. Pregnant women or children should use magnetic puncture needles or magnets to fix badges, so as to avoid skin infection caused by horse needles during activities.