1.high quality and fast 2.we are factory and across SGS test 3.the slider is nickle-free 3.resin zipper for garment Nylon:#3,#4,#5,#8,#10,finished zipper and long chain.Non-lock,pin-lock,semi-autolock,Dyed yeeth,plating (gold teeth,silver teeth,rainbow teeth),L-type and invisible zipper,woven type,water repellent Resin/plastic:#3, #4, #5, #6, #8, #10, finished zipper and long chain.Dyed yeeth, ...