Synthetic microfibers are part of the additive range to be used in addition to RESINA 3+, to obtain compounds with different characteristics. They have an average length of 500 microns and, when mixed with RESINA 3+, reinforce its structure by creating a multidirectional network within the compound; at the same time, being low absorption, they do not alter the penetration characteristics in the RESINA 3+ surface. They can be used for "fillet" type structural bonding (for boding "T" joints) where a high density structural filler and strong structure is required.