大流量滤纸
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 8421990140 | 35.0% | CN | US | Official Doc |
| 8421990180 | 35.0% | CN | US | Official Doc |
Product Images
AI Analysis
🌊 Large Flow Paper Filters (Industrial Filtration Components)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: Do You Truly Understand "Large Flow Paper Filters"?
"Large flow paper filters" are typically consumable components or integral parts of machinery used for filtering or purifying liquids (such as water, oil, or chemicals) or gases. In international trade, these are not standalone finished goods but are classified under the parts of filtering machinery. The key to correct classification lies in identifying the parent machine (water purification, industrial filtration) rather than just the material (paper).
⚠️ Key Distinction:
- If sold as replacement parts for specific water filters or industrial liquid/gas purifiers → Classified under 8421.99.
- If sold as generic standalone filter paper rolls without specific machine integration → May fall under different chapters (e.g., Paper Products), but for industrial "Large Flow" units, 8421.99 is the standard for machine parts.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Cross-Reference)
Based on the provided data, these products are classified under Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof.
| HS Code | Product Description | Application Scenario | Key Features |
|---|---|---|---|
8421.99.01.40 |
Other Parts of machinery and apparatus for filtering or purifying water | Water treatment plants, RO systems, domestic water purifiers, municipal water filtration | Specifically for water filtration/purification machines. |
8421.99.01.80 |
Other Parts of filtering or purifying machinery (Other) | Industrial oil filtration, gas purification, chemical liquid filtering, general industrial purification | For liquids/gases other than water or general-purpose purification parts not specified for water. |
🔍 Focus Reminder:
- "Large Flow" refers to the capacity/design, but the HS Code depends on the medium (Water vs. Other Liquids/Gases).
- If the paper filter is designed specifically for a water purifier (e.g., reverse osmosis pre-filter, sediment filter for water), use 8421.99.01.40.
- If it is for industrial oil, fuel, air/gas, or non-potable water industrial processes, use 8421.99.01.80.
💰 III. 2026 Latest Tariff Rate Details (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: Ongoing (as per current trade measures)
🎯 1. 8421.99.01.40 – Parts for Water Filtration/Purification Machinery
| Item | Content |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Surtax (Section 301) | +25.0% |
| Total Tax Rate | 25.0% |
| Tax Calculation | CIF Value × 25% |
| De Minimis Eligibility | ❌ Not Applicable (High tax rate usually excludes low-value shipment exemptions) |
| Legal Basis Path | HTSUS 8421.99.01.40 → USITC Section 301 Footnotes |
📌 Explanation:
- Although the base tariff is 0%, the 25% Section 301 surtax applies heavily to Chinese-origin industrial parts.
- This is a significant cost factor. Importers must budget for an additional 25% on top of the product cost.
- These are considered "industrial machinery parts," which are often targeted in trade disputes.
🎯 2. 8421.99.01.80 – Other Parts of Filtering/Purifying Machinery (Non-Water/General)
| Item | Content |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Surtax (Section 301) | +25.0% |
| Total Tax Rate | 25.0% |
| Tax Calculation | CIF Value × 25% |
| De Minimis Eligibility | ❌ Not Applicable |
| Legal Basis Path | HTSUS 8421.99.01.80 → USITC Section 301 Footnotes |
📌 Note:
- Identical tax structure to the water-specific parts.
- Applies to filters for oil, gas, chemicals, or air.
- Do not assume "paper" means low duty; if it's a machine part, it inherits the surtax.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Preparation Checklist (Non-Negotiable)
| Document | Required | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must state: "Filter Paper Element," "Part of Water Filter Model XYZ," "Flow Rate: Large Capacity," "Material: Synthetic/Natural Paper." |
| ✅ Diagram/Structure Photo | ✔️ | Show how the filter connects to the housing/machine. Prove it is a part, not a standalone paper product. |
| ✅ Commercial Invoice | ✔️ | Description: "Parts for Water Purification Machinery" or "Parts for Industrial Filter." Avoid vague terms like "Paper." |
| ✅ HS Code Declaration | ✔️ | Explicitly declare 8421.99.01.40 or 8421.99.01.80. |
| ✅ Origin Certificate | ✔️ | Proof of Chinese origin (if applicable) to confirm surtax applicability. |
✅ 2. Declaration Tips (Key Mantra)
🔥 "Don't say 'Paper'; say 'Part of Filter Machine'!"
| Scenario | Correct Declaration | Incorrect Practice |
|---|---|---|
| Filter element for a water purifier | 8421.99.01.40 Desc: "Filter Cartridge for Water Purifier" |
"Paper Filter" → Risk of misclassification under Chapter 48 (Paper), leading to penalties. |
| Filter for industrial oil/gas | 8421.99.01.80 Desc: "Filter Element for Liquid Purifier" |
"Industrial Paper" → Incorrect chapter. |
| Raw filter paper rolls (not a part) | 4823.xxxxxx (Hypothetical) | Declaring as machine part → 25% Surtax Applied Incorrectly? (If not a part, surtax might not apply, but classification must be accurate). |
📌 Critical Warning:
- If you declare "Large Flow Paper Filter" as 8421.99.01.40 but it is actually a raw paper roll for general use, you might be overpaying the 25% surtax if the raw paper is exempt.
- Conversely, if it is a machine part but declared as "Paper," you risk penalties for misclassification.
- Verify: Is it a replaceable component of a machine? If yes → 8421.99.
✅ 3. Special Cases Handling
| Scenario | Handling Advice |
|---|---|
| OEM Filters | Provide the end-machine model number. Customs verifies if it fits a specific purifier. |
| Mixed Shipments | If shipping water filters (40) and oil filters (80) together, declare separately on the same invoice with distinct HS Codes to avoid confusion. |
| Generic Parts | If the filter fits multiple brands, describe it as "Compatible with Standard Water Filtration Systems" and use 8421.99.01.40. |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 8421.99.01.40 / .80 |
25.0% (Surtax) | None specific for filters, but NSF/ANSI standards recommended for water | High surtax impacts profitability. |
| 🇨🇳 China | 8421.99.01.40 / .80 |
Varies (Check Local) | CCC (if applicable) | Domestic trade may have different rates. |
| 🇪🇺 EU | 8421.99.00 |
0% (Most FTA) | CE Marking (if machinery), REACH (chemical safety) | Lower burden compared to US. |
| 🇯🇵 Japan | 8421.99 |
0% (Most FTA) | JIS Standards | Generally favorable for industrial parts. |
📌 Conclusion:
- USA: 25% Surcharge is a major cost driver. Must be factored into pricing.
- EU/Asia: Lower tariffs, but stricter environmental/safety certifications (REACH, CE).
📌 VI. Common Mistakes & Pitfalls (Lessons Learned)
❌ Mistake 1: Declaring as "Paper Filter" (HS 4813/4823)
👉 Consequence: If it is a machine part, customs may reclassify to 8421.99, apply 25% surtax, and charge penalties for misdeclaration.
👉 Result: Unexpected 25% cost + fines.
❌ Mistake 2: Using "Filter" without specifying "Water" vs. "Other"
👉 Consequence: Customs may choose the higher scrutiny code or delay clearance.
👉 Result: Customs hold, inspection delay.
❌ Mistake 3: Ignoring the "Part" definition
👉 Consequence: If the paper is sold as a raw material (not a part), but declared as a part, you pay 25% on a product that might be 0% tax.
👉 Result: Overpayment of tariffs.
✅ Correct Approach:
"Replacement Filter Cartridge for Water Purification System, Model ABC, Material: Pleated Paper, Large Flow Rate"
🎯 VII. Conclusion: Precise Classification Saves Money!
🎯 Remember the Mantra:
🔹 "It's a Part, Not Paper! (For Machine Use)"
🔹 "Water = .40, Others = .80, Both = 25% Tax!"
🔹 "Declare 'Parts for Purifier,' Avoid 'Paper' to Stay Safe!"
📌 Pro Tip:
If your filters are for industrial oil/gas, ensure you use 8421.99.01.80. Misclassifying as water parts (40) can lead to compliance issues if the medium is different.
Always provide technical datasheets proving the filter is a replaceable component of a filtration machine.
📣 Immediate Action:
📞 Consult a licensed customs broker to confirm the exact end-use of the filter.
📄 Prepare HS Code Pre-Ruling documents if shipping high volume.
🚀 Clear customs smoothly, avoid 25% shocks, maximize profits!
✨ Professional clearance starts with accurate classification!
💼 Your every dollar of tax cost is worth calculating precisely!
Customer Reviews
About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.