Founded in 2005, among one of the oldest companies of electrical facilities, in the north of the country, Quadrina belongs to Casais Group since 2010. It is expert in the production of electrical boards, from the project design to its execution and installation.
Quadrina emphasizes a service of excellence, therefore establishes strategic partnerships with international reference groups, experts in management and energy distribution, reassuring the most innovative and sustainable solutions to any kind of infrastructure in the several markets it operates in Europe and Africa.
Quadrina has a technical and certified inhouse staff to the execution of projects with domotics solutions and intelligent buildings, which allows managing in an efficient way the facilities and the use of energy in the buildings.

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Provide services and integrated solutions, ensuring a quality reference, trust and efficiency to our clients. To manage with expertise and innovation, based on a culture of excellence, emphasizing strategic partnerships and integrating people.


Provide integrated services and solutions, guaranteeing to be a reference of quality, trust and efficiency to our customers.

Quality Policy

Quadrina takes Quality as a key element of the corporate culture. The corporation aims an efficient production and sales of products and services, which overcome the expectations of its clients ensuring its loyalty to the brand and successful business results, safeguarding success and long-term sustainability.

Based on its commitment with Quality, Quadrina holds a Quality Management System, in accordance to the demands of NP EN ISSO 9001: 2015 standards, which aims at establishing responsibilities, monitoring and reviewing processes, as well as ensure the right management of its resources, concerning the business needs.

Excellence is a main issue in all its actions, fostering a culture of awareness and effective engagement of all staff in optimizing results. Creativity and lifelong learning of our collaborators, heightened by their qualification, ensure our continuous improvement process, by the real share of knowledge based in the best practices.

We aim to:

  • Control quality of the board;
  • Meet the products specifications, including the clients demands and the legal demands and safety as well;
  • Advise the client to the right choice and use of products;
  • Develop new products that meet the needs of the clients and the market consumption trends;
  • Get the best liability for price quality.

Our behaviour is guided by partnerships with suppliers, subcontractors and other organizations which boosts sustainable business relationships, and emphasise mutual benefit.

We urge for a social behaviour and environmentally friendly compliant with the legislative requirements.


Director of Quadrina

Catarina Marques, Eng.ª