trefinos Trefinosis one of the main world producers of technical cork stoppers for sparkling as well as still wines. Trefinos also applies its long experience to the constant development of new product ranges, increasingly more adapted to the specifications and requirements of the sector. From the inspection of the bottling lines, identifying key points; through to assessment in the choice of Trefinos products ideal for each customer or the optimum storing of cork stoppers, the commercial and technical team of the company also provides all the support necessary for the effective introduction of the product.