Steel Marine Plywood : 100% Gurjan wood, Marine Grade, IS-710, specialty 19mmPly=15Ply made with Tropical Imported Gurjan wood from Burma & Malaysia with Phenol Formaldehyde Resin IS: 848-1974. Pressed Under High Pressure. Density of PLY- 825 kg m3 (approx.), Adhesive BWP- IS 848, Moisture Content- 8 to 12%, Glue sheer stent- kg per square inch, Minimum 135, Moisture Resistent- minimum 100, Water absorbent- minimum 3% in 24 hours Gold Marine Plywood : IS-710, 19mm=13Ply made with Tropical Imported Gurjan wood from Burma & Malaysia with Phenol Formaldehyde Resin IS: 848-1974. Pressed Under high pressure.