Plastic buckle, this type of buckle is suitable for adjusting the length of luggage leather. It is also called adjusting buckle, opposite buckle and side opening buckle. According to different raw materials, it can be divided into plastic buckle (POM, PP, PA material) and plastic buckle (aluminum alloy, semi aluminum alloy) for hardware fittings. It can be divided into single adjustment plug-in, double adjustment plug-in and non-adjustment plug-in according to whether to adjust or not. According to different uses, it can be divided into baby carriage plug-in, pet plug-in, outdoor safety plug-in and luggage plug-in.