Dalian New Sunlight Building Material Co.,Ltd is one of the leading China nail roof tiles manufacturers and suppliers,Website: , and we are also a professional company and factory, welcome to buy low price screw, color roofing, colorful roof, colorful stone coated steel roof tiles and wholesale cheap products from us.NAIL / SCREW of Colorful Stone Coated Steel Roof TilesAll NEW SUNLIGHT Accessories are non-combustible, prevent insect and snow infiltration, easy to install and while providing the durability and longevity of stone coated steel roof system.The nails / screws can be used in wood structure and steel structure.A nail, or screw, or bolt, is a type of fastener, typically made of metal, and characterized by a helical ridge, known as a male thread (external thread) or just thread, wrapped around a cylinder. Some screw threads are designed to mate with a complementary thread, known as a female thread (internal thread), often in the form of a nut or an object that has the internal thread formed into it. Other screw threads are designed to cut a helical groove in a softer material as the screw is inserted. The most common uses of screws are to hold objects together and to position objects.    Nail / Screw Colorful Stone Coated Steel Roof Tiles