7002 Glass in balls, rods or tubes, unworked (excl. glass microspheres <= 1 mm in diameter, glass balls of the nature of a toy)

7002 (01/1988-..) Glass in balls, rods or tubes, unworked (excl. glass microspheres <= 1 mm in diameter, glass balls of the nature of a toy) 70021000 (01/1988-..) Glass in balls, unworked (excl. glass microspheres <= 1 mm in diameter, glass balls of the nature of a toy) 70022010 (01/1988-..) Rods of optical glass, unworked 70022090 (01/1988-..) Rods of glass, unworked (excl. optical glass) 70023100 (01/1988-..) Tubes of fused quartz or other fused silica, unworked 70023200 (01/1988-..) Tubes of glass having a linear coefficient of expansion <= 5 x 10-6 per kelvin within a temperature range of 0°C to 300°C, unworked (excl. tubes of glass having a linear coefficient of expansion <= 5 x 10-6 per kelvin within a temperature range of 0°C to 300°C) 70023900 (01/1988-..) Tubes of glass, unworked (excl. tubes of glass having a linear coefficient of expansion <= 5 x 10-6 per kelvin within a temperature range of 0°C to 300°C or of fused quartz or other fused silica)