SEM IR LDA is an Engineering and Residential and Industrial Maintenance company based in Santarem. It is managed and staffed by highly experienced and qualified professionals. Its goal is to provide high quality services and equipment to its customers.


To be a leading service provider and a benchmark for Integrity, professionalism and responsibility in its field.


Develop and implement innovative and high added value solutions for our customers.


- Client satisfaction;
- Continuous improvement;
- Drive towards results;
- Open communication;
- Innovation and entrepeneurialship;
- Integrity, professionalism and responsibility;
- Development of the skills of staff members;
- Observance of Safety, Wellbeing and Environmental practices;
- Teamwork.