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Rheomac SF100 Synthetic Defoamer for Concrete

A silicone-free defoaming agent that controls entrapped air in concrete mixes to prevent segregation and surface defects. Meets HTS 3824.40.5000 criteria as a prepared concrete additive maintaining mix stability. Essential for pumped concrete and architectural finishes.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China5%+35.0%40%
🇲🇽Mexico5%+10.0%15%
🇨🇦Canada5%+10.0%15%
🇩🇪Germany5%+10.0%15%
🇯🇵Japan5%+10.0%15%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3824.99Lower: 15% vs 40%

If anti-foaming preparations for general industry

Defoamers not specifically marketed for construction classify as general-purpose anti-foaming agents.

3403Lower: 16.5% vs 40%

If lubricating preparations containing defoamers

Mixtures functioning primarily as lubricants with secondary defoaming shift to lubricant preparations.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Include foam control performance certificates; comply with FDA indirect food contact if applicable; maintain temperature control below 40°C during ocean freight

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