33 What is the classification of a ceramic brick containing (by weight) 55% of silica (SiO2), with pyrometric cone 18?
A. 6902.20.1020
B. 6902.90.5010
C. 6903.20.0000
D. 6904.10.0010
E. 6904.90.0000
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The Answer is: A
Citation: HTS GRI 1 and Chapter 69 Additional U.S. Note 1
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