It is a type of plywood produced from exotic or tropical trees, both surfaces of which are covered with Phenolic film and the edges are insulated with waterproof Acrylic Paint. They are panels with a very high number of repetitions used to provide a smooth surface in concrete formwork systems. It is generally used to obtain "Gross Concrete" in modern constructions preferred by construction companies. It is resistant to impacts, water and humidity. It is economical because its wastage is at a minimum level.