Glass in balls (other than microspheres of heading no. 7018), rods or tubes, unworked

Glass and glassware

70

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Glass; unworked, in balls (other than microspheres of heading no. 7018)

7002_10

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Glass; unworked, in rods

7002_20

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Glass; unworked, in tubes, of fused quartz or other fused silica

7002_31

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Glass; unworked, tubes, of glass having a linear coefficient of expansion not exceeding 5 x 10 (to the minus 6), (or 0.000005) per Kelvin within a temperature range of 0-300 degrees C

7002_32

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Glass; unworked, in tubes, other than of glass having a linear coefficient of expansion not exceeding 5 x 10 (to the minus 6, (or 0.000005) ) per Kelvin within a temperature range of 0-300 degrees C, not fused quartz or other fused silica

7002_39

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