GNS group is a group of industrial companies with more than 50 years of experience, specialized in developing products and solutions for the aluminum accessories industry.

We offer innovative solutions adapted to the customers needs around the world. All GNS group employees share the enthusiasm for a common project of growth and continuous improvement, so we say that the Aluminum is in our DNA.

We are committed to contribute to the future development of our community, industry and the "made in Portugal", which has always represented quality product worldwide and has always been a flag that companies of our group carried with pride over all this time .


All our products are subjected to the most demanding quality tests. Each of the different product lines are certified and approved in accordance with the CE requirements. The primacy of quality we put into each product we make begins with the careful selection of our raw material suppliers.


Supported in our research and product development department, we develop solutions tailored to the real needs of the market, following the major design trends, economy and comfort. Through partnerships we develope with universities, we develop products to awaken new needs.


Developing innovative products with high value in exclusivity and protection of industrial property, we patent those with the greatest potential, defending our customers and distributors . At this time our group of companies holds the patent of the main lock sold in the Iberian Peninsula (7715) and we are the only manufacturer of passive ventilation system in Portugal - ANCOVENT.


For us, the customer always comes first. Through widely experienced manufacturing methods, we ensure the shipment of any order within a maximum of one week term. We developed a great product training component to the clients of our customers. Through our technical department, in broad agreement with the commercial area we help our client in any situation.


All the different teams and business sectors are involved in a continuous and demanding process of continuous training in order to equip the different areas of the company with differentiating knowledge at the manufacturing process and product.


Monopoint and multipoint locks, handles, cremones, closing fittings, hinges and tilt&turn systems with or without micro-ventilation, in GNS we have everything needed for the manufacture of doors and windows with aluminum profile. A full range of high quality products giving powerful arguments to our customers for excellent business opportunities.

Last years our engineers presented and patented a variety of products with high innovation level and we are still doing it year after year, ir order to complete a substantial range of solutions in a extremely demanding market with a high technical level.

From the best raw materials, such as aluminum, steel and stainless steel, selecting the most suitable surface treatment, zinc plating, nickel plating, electrostatic painting or anodizing, with mounting components such as screws and springs exclusively in stainless steel, with controlled production processes with an efficient and well-trained staff, we ensure long life to our products and trust and satisfaction to our customers.

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