we can supply all kinds of anchor bolts. Anchor boltsAdvantages of products:1,combating ageing, repelling sudden-change oftemperature, ... it, no specialtools needed.5, No corrosion problem for metal bolts, Good longevity.6, Low nylon heat-transfer property, no cold ... less used, so costs is lower Base for the anchors:Concrete, solid brick, hollow concrete block, aerocrete.