OM4 Ball Clay from Mexico
OM4 ball clay is a coarse, high-plasticity grade ideal for outdoor sculpture and architectural ceramics, offering robust green strength. HTS 2508.40.0110 covers this as other ball clays due to its sedimentary origin and ceramic applications.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Screen for sand content; high silica may trigger reclassification as aggregate
• Label shipments clearly as 'ceramic ball clay' vs. construction clay