... etc3.MaterialCarbon Steel,Alloy steel,stainless steel and brass4.Grade4.6.8.10 etc5.FinishBlack,Zinc plated,Copper plating,Phosphating,Mechanical ... we can also produce it according to your requirement. As a professional manufacturer, we promise to provide you the products ... staff members.Through 30 years' development, our company has become a leading and famous company in China. We sell fasteners, ...