name: bolts material:Brass, Bronze, Carton steel,Stainless steel, Aluminum alloy,etc ... , Carton steel,Stainless steel, Aluminum alloy,etcShapeCustomizedDimensionsAllSurface treatmentPowder coating, Hot galvanized, Painting, Polishing, Brushing ,Chrome/Zinc/Nickel plating,etc.Certification ISO ... welcome our old and new clients to visit our factory. bolts