DD FASTENERS yovomerezedwanso ndi satifiketi ya ISO 9001 ndi mafakitale ochitidwa mogwirizana ndi 6S standard. DD FASTENERS zikutsatira onse DIN ndi mayiko ena onse, kuti apereke zogulitsa zonse.
Zida zotsutsa-corrosion zothandizidwa ndiukadaulo wa Germany, kuteteza zachilengedwe, anti-acid, chinyezi ndi kukana kutentha, mitundu yosiyanasiyana, kuyesa kwa mchere-mchere kwafika kale mpaka maola 3,000.
Zopangira ma DD ili ndi systerm yoyendetsera yokha yochokera ku zinthu zopanda pake kupita ku zomalizidwa zomaliza ndipo ili ndi zida zonse zoyesera bwino.
D D FATENERS imatenganso malo otsogola omwe amakhala ndi ma Vickers osinthika okha, makina aukali, mawonekedwe owonetsera zida za Rockwell, makina oyesera, zida zachitsulo zodulira zitsulo, kupindika poyendetsa makina othamanga, chida choyezera zithunzi, makina oyesa ndi kuyesa kwa mchere chipinda ndi makina opanga ma electroplated etc.