1.Standard:DIN,JIS,USS,BS,GB etc
2.Material:stainless steel.carbon steel,brass etc
3.Finish:black.zinc-plating,zinc yellow,HDG etc
4.shape :round ,square,bowl or as your wish
5.Experience:We have over than 10 years in producing ang supply washers.80% of our products are exported to oversea.we own the competitive price,high quality,excellent service and prompt delivery