Can I sign the supplementary materials for Spanish non-profit immigrants?

Supplementary materials for Spanish non-profit immigrants may not be signed. Spanish non-profit immigrant visa refers to a way to obtain residence permit by donating money or providing services to Spanish non-profit organizations (such as cultural, scientific research and charitable institutions). When applying for a non-profit immigrant visa, it is very important to provide sufficient supplementary materials in addition to meeting the basic application conditions. The content of supplementary materials should be related to the non-profit project applied for, and can prove the true intention and legitimacy. Supplementary materials are only a part of the application process, and whether you can finally get a non-profit immigrant visa will be affected by other factors, such as the individual's application performance and the needs of specific projects.