Changzhou Jianshun Machinery Parts Co., Ltd. is a leading enterprise focused on the research, development, and production of Cold Heading Parts. Our main products include Sleeve Welded Seamless Steel Pipe, Iron Ring Cylindrical Spacer, Hexagon Flange Bolts, Non-Standard Nut Processing, Non-Standard Nut Processing And Customization, Non-Standard Nut Processing Of Various Materials, Custom Processing of Non-standard Nuts, and various Recliner Accessories. With excellent technology and advanced man