Section 13 ARTICLES OF STONE, PLASTER, CEMENT, ASBESTOS, MICA OR SIMILAR MATERIAL S; CERAMIC PRODUCTS; GLASS AND GLASSWARE 70 Glass and glassware 70 02 Glass in balls (other than microspheres of heading 70.18), rods or tubes, unwork 70 02 10 70 02 10 00 Commodity Code Description 70 02 10 00 00 - Balls 70 02 20 00 00 - Rods 70 02 31 00 00 -- Of fused quartz or other fused silica 70 02 32 00 00 -- Of other glass having a linear coefficient of expansion not exceeding 5 x 10-6 per Ke 70 02 39 00 00 -- Other