... professional service 4, fast delivery YOO brand nylon zipppers for jeans:We are OEM ,and we have ... of materials to make the zippers,for example,the metal,the nylon and the resin.certificate:ISO9001: ... the zippers:Our zippers have modern design and fashion styel,and we can made the differernt ... The zippers have different size and various style for your reference,and Appreciate to received your advice ...