Sodium Tungstate Borate Flux Mixture from Germany
A fused mixture of sodium tungstate and borates used as soldering flux in electronics and metal joining. Enhances wetting and corrosion resistance in high-temperature applications. Under 3824.99.3500 for inorganic tungsten compound mixtures.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Include flux activation temperature specs to confirm industrial chemical use
• TSCA registration required for new tungsten-borate formulations entering US commerce
• Separate from welding preparations to prevent reclassification under 3810