... 1.double head CO2 laser machine 2.suitable for extra-long piceces 3.USB port, 4.high speed and accuracy 5.with CE,FDA Double Head ... crystal, glass, wood, bamboo, oxhorn, figuline, marble, leather, cloth, and double color board, etc., and it is commonly used in industries ... . 2. With front and back running-through design, this double head laser engraver is applicable for processing extra-long workpieces ...