≤17hGlass Capillary Tubes and Rods/Special Shaped Glass Capillary Tubes and Rods/ Quartz Plates/ Quartz Machined Parts/ Quartz Instruments/ Quartz Laser Cavity Filter,Glass Capillary Tube and Rod,Special Shaped Glass Capillary Tube and Rod,Quartz Laser Cavity Filter,Multi hole Laser Flow Tube