This is the Supplier Relationship Portal of uisa. Here, we strengthen our ties with our partners and provide relevant information for those who are already part of our network, those who wish to join us, and the entire interested community. Presenting the stages of the supply chain transparently is very important to us.
Sharing and Generating Value


Frequently Asked Questions
Become a uisa Supplier
We seek companies that aim to provide their products and services without compromising future generations—those that think about the sustainability of the planet. We value social and environmental responsibility, as well as integrity in the relationships between suppliers, our team, and the community.
I Am a uisa Supplier
- Reporting Information
- Lockout of Hazardous
- Energies
- Work Permit
- Vehicle Safety
- PPE and EPCs
Purchasing Process
Monthly, we conduct performance evaluations for our critical suppliers in the categories of fixed services, packaging, and raw materials, while our suppliers of non-fixed materials and services are evaluated semi-annually. This evaluation considers various requirements, and the final score results in the Supplier Performance Index (IQP). We explain the IQP further below for a better understanding.