Nylon insulation fixings is a kind of special plastic expanding fixing anchor, which is made of the engineering plastic to fix the insulation board on the wall in concrete or brick substrate in the insulation system industry. Insulation plugs is used for external wall insulation function, widely used in building. To install,Pre-drill a hole as the outer diameter of insulation plug body and insert it into the hole by a hammer to drive to expand and fix the insulation board on the wall surface.