Borosilicate Hollow Glass Microspheres Type A from Canada
Hollow borosilicate glass microspheres averaging 30-120 microns in diameter serve as lightweight fillers in syntactic foams for aerospace composites. Classified under HTS 7018.20.00.00 as glass microspheres ≤1 mm, excluding imitation pearls or lamp-worked ornaments.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include density and wall thickness specs in documentation; ensure 'hollow' nature doesn't trigger chemical treatment scrutiny; separate from solid beads to prevent mixing with heading 7018.10