WECO, TOMRA, and Bühler (SORTEX) for high-end, automated solutions, alongside specialized providers like WESORT, Mihoshisorter, and Nut Technology, offering AI-driven or customized systems, often with competitive pricing from manufacturers like Anhui Wenyao via platforms like Made-in-China. These suppliers offer advanced optical sorting for defects, color grading, and foreign material removal, with options ranging from large-scale industrial machines to integrated processing lines.