Dear Sir or Madam: Have a nice day ! My name is Sam, a representative of China Fastenal Co.,Ltd. I browse your web and know you are dealing with fasteners. Our company is a large manufacturer and exporter of fasteners especially in washers . It has received the certificate of ISO9001:2000. I hope we will become your supplier in China and I am sure that our company will provide you with the high quality products in the lowest prices. If you send me detail enquire ,I will quote to you at first time! Our company mainly produces have various kinds of washers in different materials such as flat washers ,spring washers ,toothed lock washers etc. (1) standards: DIN125A&B,DIN126,DIN127B,DIN128A&B,DIN137,DIN432,DIN433,DIN434,DIN462,DIN1440,DIN436,DIN6797A&B,DIN6798A&B,DIN9021, DIN6916,ISO,AS,NF,JIS,BS,ASTM,SFS,GB,etc and non-standard. (2) Materials: mild steel ,50#steel,65Mn steel,A2,A3,A4,copper,aluminum etc. (3) Surface treatment: polished, hot dipped galvanized, nickel plated, cadmium plate