In order to optimize and improve the business, and perform it according to the latest standards of business ethics, the company SPB - INŽENJERING Ltd. it was first certified in February 2007. The ISO 9001: 2015 standard recertification was performed in the planned terms in agreement with the certification house Bureau Veritas, and the valid certificate was obtained in January 2019, while the next recertification is expected in February 2022.