... for example,the metal and the resin.certificate:ISO9001:2008Excellent credit enterprise Specifications:1) Available types: cord end and cord lock2) More ... of 2.7 hectares. Our company offers resin, nylon and metal three series of zips of "YOO", "ASA" brands, and ... a variety of styles of metal and plastic buttons, including snap buttons, combined buttons, ABS alloy ...