• 1.0
• NY N222055
• Aug 31, 2012

• Type: Classification • HTSUS: 2621.90.0000
  

The tariff classification of cenospheres from China and India

• 1.0
• NY N248692
• Mar 21, 2014

• Type: Classification • HTSUS: 2621.90.0000
  

The tariff classification of cenospheres from Germany

• 1.0
• NY I83097
• Aug 26, 2002

• Type: Classification • HTSUS: 2621.90.0000
  

The tariff classification of granulated copper slag from India

• 1.0
• NY I87036
• Dec 03, 2002

• Type: Classification • HTSUS: 2621.90.000
  

The tariff classification of silicon dross from Russia

• 1.0
• NY N332274
• Apr 27, 2023

• Type: Classification • HTSUS: 2621.90.0000
  

The tariff classification of rice hull (husk) ash from India

• 1.0
• HQ H003743
• Aug 06, 2007

• Type: Classification • HTSUS: 2621.90.0000
   Revokes:   955742     Related:   955742   

Revocation of Headquarters Ruling Letter (HQ) 955742, dated April 7, 1994; Classification of micro silica sand.