Polyamide 6 (PA6), polyamide 6.6 (PA6.6) and 6.6/6 copolymers (PA6.6/6) for compounding, fast moulding cycle, extrusion, monofilaments, films, industrial yarn and textile fibres. PA6.10 e PA6.12 for compounding, injection moulding, monofilaments, industrial yarn and textile fibres.