SIAM INVENT CLUB 333 is high-quality plywood with fire-retardant properties and marine-grade strength. It is made with selected high-density timber and treated wood veneers using OCTAPRO technology. The ply is dimensionally stable, calibrated, and has a uniform thickness with a smooth top surface finish. It also comes with a lifetime guarantee and a 7x money-back guarantee. SIAM INVENT CLUB 333 is a durable and protected option for your ply needs.