... tube cost 3,run-through body design 4,CE,FDA Double-head Laser engraving machine RJ1612RJ Laser Engraving and Cutting Machine ... glass, crystal, plastic,double-color board, marble, ceramic, glass, horn, paper, rubber, leather and so on.Features 1.With a high precision engraving ... laser tube and a high power cutting laser tube, this Double-head Laser Machine ...