José Ribeiro is the holder/holder of the public works contractor license in the 4th Category – electrical and mechanical installations in the 12th subcategory Heating, ventilation, air conditioning and refrigeration, awarded by IMPIC – Institute of Public Markets for Real Estate and Construction.
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The rectangular duct and accessories are tested in accordance with the standard EN1507 – Tightness class C.

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The circular duct and accessories are tested in accordance with the standard NP EN12237 – Tightness class D.
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Quality Certification

We recognize Quality as an important factor for the company’s strategic and sustained development, and therefore its Quality Policy must be fundamental for all its stakeholders, with a view to Continuous Improvement.

To achieve its goals, Diâmetro Ltd. bases its Policy on the following principles:

  • Provide a high degree of satisfaction to Customers and other Stakeholders;
  • Comply with the requirements of the ISO 9001:2015 Standard, applicable legislation, contractual requirements and statutory and regulatory requirements related to the company’s activity;
  • Promote continuous improvement of the organization and the effectiveness of the quality management system through the efficient management of its processes;
  • Provide qualified Human Resources and the necessary equipment for the development of its activities;
  • Promote motivation and encourage teamwork among all Employees.

In this way, the implementation and maintenance of an QMS constitutes a tool for the evolution of the company’s activity, in order to achieve the objectives and goals defined annually.