Production and commercialisation of pipes, fittings and special pieces in high modulus polypropylene PPHM, in high and low density polyethylene HDPE, HDPE-PE100 and LDPE, in PSV second life plastics, for sewerage systems, water and gas pressure transport, irrigation, sports ground drainage, drainage, environmental remediation, biogas collection, cable ducts, monotubes minitubes and minitubes for telecommunications, power cables, fibre optics, telephony, artesian wells, vertical drilling with anti-legionella protection, groundwater abstraction, piezometers, boreholes, seismic testing, vertical low-enthalpy geothermics, landfill applications, leachate collection, platform water collection, rainwater collection and runoff from viaducts.