... quality control.We believe “Responsibility is the guarantee of products quality, and quality is the soul of a company ”.1. Stainless Steel Fasteners manufacturer ---similar ... ,brass,aluminum,stainless steel3Diameter rangeM3-M16 mm ,the length within 150mm4Head diametre rangethe largest is 35mm5Surface treatmentZinc,Nickle,Passivated,Tin-plated,Sandblast ...