Sub Headings of 7017

7017.10.30.00 Quartz reactor tubes and holders designed for insertioninto diffusion and oxidation furnaces for production of semiconductor wafers
7017.10.60.00 Other
7017.20.00.00 Of other glass having a linear coefficient of expansion not exceeding 5 x 10-6 per Kelvin within a temperature range of 0°C to 300°C
7017.90.10.00 Microscope slides and micro cover glasses
7017.90.50.00 Other