For stable production of printed-circuit-boards it is necessary to have an insulant with good mechanical properties and low cost. These qualities has copper-clad paper-based laminat GF (type XXP), made on the basis of a treating paper and phenol-formaldehyde resin. It is a traditionally produced material known for many producers of printed-circuit-boards. However technology of the given material does not cost on a place. The modernization of an impregnating machine has allowed to improve such performances, as distorting and appearance. The collateral operations with leading chemical institutes of Russian Federation in result have given that all kinds copper-clad paper-based laminates (GF, GOFVM, MI1112) are characterized by stable cohesion with a foil and stability to effect of melted welding alloy. Further, come to meet to wishes of our consumers, by scientific and technical centre of factory is developed and introduced into production the modified variant GF with an opportunity of punching without prewarming .

GF is for today the cheapest material for printed-circuit-boards distinguished by good mechanical characteristics. Due to smaller hardness in comparison with glass fibre laminate term of use of stamps and drills is higher than at processing glass fibre laminate