Solder Paste Inspection System (SPI) Industry-leading 3D SPI systems deliver the highest standards of true metrology-grade 3D solder paste inspection. Système d'inspection optique automatisé (AOI) Koh Young’s AI-powered True 3D AOI solutions help manufacturers achieve zero-defect production. Smart Factory Solutions (SFS) True AI-powered smart-factory solutions for automated process control and optimization.