Shenzhen Longgang District Long Chenglong Sitte Derlin Zipper Factory is one of the biggest zipper manufacturers in Hong Kong and mainland China with over 20 years' experience in zipper making. To promote our brand "DERLIN", we provide solid guarantee for our product quality. Our products are able to pass the evaluations of BS/ASTM/RoHS/NICKEL FREE/AZO FREE testing methods. With ISO9001:2000 and OEKO100 approval, we have become more confident. Our factory provides all kinds of zippers, such as nylon, visible (plastic), and metal zippers, L-type, invisible, rhinestone, and waterproof zippers and reflex zipper accessories, such as metal buckles, rubber label patches, woven labels, drawcords, and other related products. All of these products are able to find in our local shops or by ordering. We know that buyers have their own design and creation on their items, so we develop what