The tariff classification of Scandium Oxide, Silicon Dioxide, and Silicon Monoxide from China
Internal Advice Request; Classification of treated fumed silicas
Modification of NY J83810; Tariff classification of two samples of silicon dioxide “C-Gel”, synthetic silica gel, from Switzerland
Request for Internal Advice; Classification of Hydrophobic Fumed Silicas
The tariff classification of silicon dioxide from Japan
The tariff classification of synthetic amorphous silicon dioxide (CAS no. 7631-86-9) from Germany
The tariff classification of Precipitated Synthetic Amorphous Silicon Dioxide (CAS # 7631-86-9)
The tariff classification of silica fume from Canada
Protest 3307-03-100021; Silica mixed with hydrolysis products