DD FASTENERS also approved by ISO 9001 certificate and the factories operation performed according to 6S standard. DD FASTENERS are comply with both DIN and international standards, to provide full range of products.
Anti-corrosion equipment cooperated with Germany technology, environment protection, anti-acid, moisture and hot resistance, different colors, salt-spray test has been already reached to 3,000 hours.
DD fasteners has an automated control systerm from raw materials to finished products and equipped with complete quality testing equipment.
DD FATENERS also takes the leading position equipped with automatically rotary side Vickers, micro hardness machine, digital display Rockwell apparatus, tensile experiment machine, metallographic sample cutting machine, drilling screw tapping speed machine, image measurement instrument, pull-out test machine and salt spray corrosion test chamber and electroplated machine etc.