... from China; Certification:ISO14001 ISO9001 SGS Specifications Stainless Hexagon head anchor bolts with full thread Process Capablilities Standard ISO, ... Aluminum,Carbon steel,Alloy steel, silicon bronze,etc.Head/Tread styles According client's requiresCoating/Surface treatment Zinc ... products and equipment from Taiwan area, and mainly produces forged fastener precise screws, which are made of titanium, ...