HS Code 381900

HS code 381900 is the World Customs Organization 6-digit HS 2022 subheading for "Hydraulic brake fluids and other prepared liquids for hydraulic transmission, not containing or containing less than 70 % by weight of petroleum oils or oils obtained from bituminous minerals". The first two digits (38) are the chapter — Miscellaneous chemical products — and digits 3-4 (3819) are the heading. Countries add further digits (8-10) for their national tariff line.

Common products classified under 381900 include brake fluid, hydraulic fluid, DOT brake fluid, hydraulic transmission fluid and similar items matching hydraulic brake fluids and other prepared…. The correct code still depends on the product's material, function and intended use.

Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market — USITC HTS (US), TARIC / Access2Markets (EU), GOV.UK Trade Tariff (UK), CBSA (Canada), ABF (Australia) or Singapore Customs — and look up the full national code with China as the country of origin.

The first 6 digits (381900) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.

Treat a supplier-provided code as a clue, not a final classification. It can be incomplete, China-export-specific, or mismatched to your destination's rules. Verify against the official tariff and your product's actual material and use.