Since society is civilized, the need for material life is innovative, so new source material is generated continuously. After proceeding researches and improvements for many times, “Plastic Raw Material” is appeared, then we have made unremitting efforts with intelligence; therefore, from space- time of metal, toward the new epoch, and a new product is generated, which is very light, not thick and heavy, no rust,with chemical resistance, tempered, elastic, highly shock tolerance and efficient;that is the buckle made of “Engineering plastic”.