Composite-plastic material in extruded form for use in products, buildings and constructions; extruded composite-plastic in the form of panels, bars, poles, posts, rods, pipes, tubes, planks, frames, beams, blocks, slabs, columns, pillars, meshes and sheets for use in production and manufacturing of pit props, pallets, fenders, fence posts, fencing, gates, container linings, shelving, decking, scaffold boards, pipes and guttering, window frames, door frames, doors, shutters, backboards, wallb...