our company supply Mainly roducts,materials,standard,surface treatment as below:
BOLT:Hex Bolt,Hex Flangebolt,Hex Socket cap screw,Carriage bolt ,DIN933,DIN931,DIN6921,DIN912,
DIN6921,DIN916,DIN603, ANSI BOLT,ect,    
WASHER:Flat washer,Spring washer ,DIN125,DIN126,DIN127B,DIN7980,DIN440,DIN1440,DIN9021,USS,SAE etc,                
NUT:Hex nut,Hex flange nut,Nylon Lock nut, etc,DIN934,DIN935,DIN936,DIN6923,DIN985,DIN982,DIN439,
DIN6334 ,Heavy hex nut etc,
SCREW: Drywall screw,Chipboard screw,Self tapping screw,Self drilling screw,Concrete  screw,Wood
screw etc,DIN571,DIN7505,DIN7504 etc                                  
Thread rod:DIN975,DIN976 ,ANSI UNC Thread rod etc,                                             
Standard:DIN,AS,BS,ANSI,ASTM etc,and No-standard according to your drawing request.     
Materials:Carbon steel Class4.8 /5.8/6.8/8.8/10.9/12,9   ,Stainless steel A2(304),A4(316),Brass etc.    
Surface treatment:Yellow zinc,White zinc,Black,HDG,Copper, Dacromet etc.