Qingdao Ruichang Machinery Co.,Ltd. is the specialized manufacturer in the handicraft tool trade.The product adopt the highquality carbon steel, chrome steel that the national fixed --point business enterprise produce forging, the hot processing enhance, the surface plate the chrome of nichel, designing from the experienced engineer of the tool industry, development, mark the GB/T4388-4393-1995 and American standard ANSI provision contents whole distance to follow supervision according to the country strictly to guarantee the product quantity.