... we have the following advantage: experimented staff and equipment Qualified products good price 1,Products DetailesMaterial1. ... - Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black Anodize, ... know:Due to our factory aim to produce the Screw with washer ,so if you are interesting ... for our reference if Non Standard screw with washer ,and then we can quote you the best ...