Ruida RDC6445 RDC6445G RDC6445S Controller for Co2 Laser Engraving Cutting Machine Upgrade RDC6442 RDC6442G WholesaleBuy Directly From Shop1513187 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.