* The panel is made of good quality cold-rolled steel sheets, which are punched, spot-welded, coated with epoxy powder after has been phosphoreted.

* Inside of the panel is filled with foamed cement.

* The top steel sheet of the panel is stuck with high anti-wear and fireproof high-pressure laminate (HPL) or conductive PVC tile.

* The borders of the panel are trimmed with conductive PVC edges.