Filli Boya's "quality product quality application" principle and the www.filliustam.com system that Filli Boya Warranty has put into practice aims to enable consumers to find the suitable craftsman according to the criteria they seek through the system. In the system, there are masters who have received the Filli Boya product and behavior training professional certificate of construction painting. In addition, Filli Boya guarantees the work of the masters over the Filli Ustam system for two years with the application and product guarantee.