HS Code 6815.99
Stone articles and articles of other mineral substances; n.e.c. or included in heading no. 6815
6815.99.41
General Duty: Free
Articles of stone or of other mineral substances, nesoi
6815.99.41.10
KGS
Containing by weight more than <il>70 percent</il> magnesia, expressed as MgO, with carbon content ranging from trace amounts to less than <il>30 percent</il>, and chemically bonded by resin or pitch
6815.99.41.70
KGS
Other
6815.99.20.00
KGS
General Duty: Free