2) a fixed number of pieces per plate set one up. 3) self-tapping screws should be tight squeeze and expansion nail plastic cap and composite foam cement board surface neat or slightly screwed into a number, xps extrusion board, to ensure that the expansion nail twist tail back to the primary wall full anchoring. Insulation board said straightaway that to building heat preservation board. Insulation board is a polystyrene resin as raw material, together with other raw materials and polymer-containing material, Baoding xps Extrusion boards, plastic sheeting, with moisture, water resistance, can reduce the thickness of the external structure of buildings, thus increasing the interior usage area.