镍的自由铁链

Zippers containmetal zipper,nylon zipper,plastic zipper,coil zipper,vislon zipper,waterproof zipper,invisible zipper,open end zipper,closed end zipper etc. ...clients'satisfaction is our great pursuit...Zipper Description: The bulk of a zipper consists of two strips of fabric tape, each affixed to one of the two pieces to be joined, carrying from tens to hundreds of specially shaped metal or plastic teeth. These teeth can be either individual or shaped from a continuous coil, and are also referred to as elements. Performance features and classification of zipper Invisible zippers' teeth are behind the tape. The tape's color matches the garment's, as does the slider, so that, except the slider, the zipper is "invisible". This kind of a zipper is common in skirts and dresses. Invisible zippers are usually coil zippers. They are also seeing increased use by the military and emergency services due to the fact that the appearance of a button down shirt can be maintained, while having a quick and easy system. metal zippers are the classic zipper type, found mostly in jeans today. The teeth are not a coil, but are individual pieces of metal moulded into shape and set on the zipper tape at regular intervals. Metal zippers are made in brass, aluminium and nickel, according to the metal used for teeth making. All these zippers are basically made from flat wire. A special type of metal zipper is made from pre-formed wire, usually brass but sometimes other metals too. Plastic zippers are identical to metallic zippers, except that the teeth are plastic instead of metal. Metal zippers can be painted to match the surrounding fabric; plastic zippers can be made in any color of plastic. Plastic zippers mostly use polyacetal resin though other resins are used as well, such as polyethylene.Nylon zippers: Open ended zippers use a "box and pin" mechanism to lock the two sides of the zipper into place, often in jackets. Open-ended zippers can be of any of the above specified types. Closed ended zippers are closed at both ends; they are often used in baggage.Waterproof zippers: The best advantage and character of this waterproof zipper is can be waterproof and strong.