With the development of human society, economy and science and technology, the zipper has developed from the initial metal material to the non-metal material, single-function single function to multi-variety and multi-special comprehensive function, from simple construction to today's delicate and beautiful, colorful, after a long time. Evolution. Its performance, structure and materials are changing with each passing day. It is widely used in aerospace, aviation, military, medical, civil and other fields. Small zippers play an increasingly important role in people's lives, and increasingly show its importance. Sex and vitality. The zipper, one of the ten most practical inventions of humanity in this century, has been included in the annals of history.