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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