Cheap And Discounts FONLAND Ruida RD RDC6442G RDC6442S CO2 Laser DSP Controller for Laser Engraving and Cutting Machine RDC 6442 6442G 6442S Wholesale. Buy Directly From Merchant FONLAND Laser Solution Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.