The operation consists in compensating the additional transport costs for the raw materials imported by the company PROCAP ‘specialising in the processing of plastics for the manufacture of hollow polyethylene bodies for rainwater storage and the development of pits and sewerage systems’ to maintain their competitiveness and an attractive offer. Since 2014, the company has been producing a wide range of septic tanks, purification devices and water tanks that comply with European standards. To do this, the company imports polyethylene, ECOFLO filter kits with coconut chips, pre-filters, screws, sleeves, valves or lids.