Fused Quartz Bulk Fibers
Pure fused quartz glass fibers in bulk, designed for high-temperature applications such as fiber optics preforms. Chapter 70 Note 5 explicitly includes fused quartz as glass, and the bulk form fits the tariff item for other glass fibres. These fibers are not optically worked or processed into articles of Chapter 90.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the fibers are optically worked for fiber optics
Optical fibres are excluded from Chapter 70 and fall in Chapter 90.
If the fibers are processed into yarn or fabric
Further processing changes the tariff classification.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the fibers are in bulk and not optically worked to avoid classification under Chapter 90
• Document the fused quartz composition to confirm glass status under Note 5
• Check if end-use in fiber optics triggers other regulatory requirements
Related Products under Tariff item 7019.90.00
AR-Glass Bulk Fibers
Alkali-resistant AR-glass fibers supplied in bulk form, used to reinforce concrete and for geotechnical applications. These fibers are unprocessed beyond initial manufacture, fitting the tariff item for 'other' glass fibres and articles thereof. They are not worked into yarn, rovings, or woven fabrics, and contain fused silica as permitted by Chapter 70 Note 5.
AR-Glass Chopped Strand Mat
Alkali-resistant AR-glass chopped strand mat for concrete reinforcement and GRC panels. High zirconia content provides durability in alkaline environments. Falls under tariff item 7019.90.00 as a non-woven glass fiber article not elsewhere specified.
AR-Glass Woven Fabric for Concrete Reinforcement
Alkali-resistant (AR) glass woven fabric used for reinforcing cement boards and shotcrete. The fabric's woven construction from AR-glass filaments provides high tensile strength and resistance to alkaline environments, making it essential for construction composites. It falls under tariff item 7019.90.00 as an article of glass fibers, specifically a woven fabric.
Basalt Fiber Continuous Roving
Continuous basalt fiber roving derived from melted basalt rock, used in high-temperature composites. Treated as glass fibers under Chapter 70 notes, which include fused silica-based fibers. Falls under tariff item 7019.90.00 as other glass fiber articles.
Basalt-Impregnated Glass Fiber Bulk
Hybrid glass fibers blended with basalt in bulk form, designed for fire-resistant composite applications. The predominant glass composition keeps this product within the scope of glass fibres, and the bulk form is not yet worked into yarn or fabric. This classification aligns with the tariff item for other glass fibre products.
Biaxial Woven Glass +/-45°
Biaxial woven glass fabric with fibers oriented at +/-45° for shear reinforcement in wind turbine blades. The stitched or woven construction from continuous glass filaments provides high shear strength and dimensional stability. This product is an article of glass fibers, specifically a woven fabric, under tariff item 7019.90.00.