Section 13 Articles of stone, plaster,cement,asbestos, mica or similar materials; ceramic products; glass and glassware 70 Glass and glassware 70 20 Other articles of glass, nes 70 20 00 Quartz reactor tubes and holders designed for insertion into diffusion and oxidation 70 20 00 20 Quartz reactor tubes and holders designed for insertion into diffusion and oxidation Commodity Code Description 70 20 00 20 00 Quartz reactor tubes and holders designed for insertion into diffusion and oxidation
