HONGYU METAL was founded in 1994.But it has long history experience for exporting washers to the world by own trade company----Qingdao DukYang Trade co.,ltd. The materials meet the severe requirements. Kinds as: A2 , A3 , A4 and copper .The standards about washers like this: Not only DIN125、DIN126、DIN127、…DIN7989；NFE 25-513----NFE25-515 ；but also JIS，KS，BS4320，etc. And according to the client’s design to produce the special fasteners. Allow payments: T/T,30% is the earnest, the last is paid after receiving the copy of the B/L; L/C at sight, and so on. The shipment condition: FOB china main port, or CIF the destination.