Frozen Tube Box
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3926909989 | 22.8% | CN | US | Official Doc |
| 3926909910 | 22.8% | CN | US | Official Doc |
| 3923102000 | 35.0% | CN | US | Official Doc |
| 3923109000 | 38.0% | CN | US | Official Doc |
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βοΈ Frozen Tube Boxes: The Ultimate Guide to HS Codes, Tariffs & Clearance Strategies (2026)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Compliance Strategy
π 1. Product Definition & Classification: What Exactly is a "Frozen Tube Box"?
Frozen tube boxes are critical laboratory consumables used for the storage, transport, and preservation of biological samples (blood, DNA, tissues) at ultra-low temperatures (-80Β°C or in liquid nitrogen). In international trade, they are primarily classified based on their material composition and primary function:
Type A: Laboratory Equipment/Containers Plastic boxes designed specifically to hold cryogenic tubes (Cryovials). They are often part of a larger laboratory apparatus or are considered "other articles of plastic." * Key Feature: Designed for laboratory use, not general logistics packaging.
Type B: Packaging Articles Plastic boxes used to transport or protect goods (the tube boxes themselves) during shipping, or simple plastic containers that fall under general packaging definitions. * Key Feature: Functional as a packaging unit for transport or general storage.
β οΈ Critical Distinction Point: - If the box is a specialized laboratory container (rigid, specific dimensions for rack systems) β Look at Chapter 39 Headings 3926 or 3923. - If the box is a general plastic packaging item (e.g., a shipping carton or simple storage bin) β Look at Chapter 39 Heading 3923. - Misclassification Risk: Declaring a specialized lab rack as "general packaging" may trigger higher duties due to different tariff lines (e.g., 3923 vs. 3926).
π¦ 2. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided data for "Plastic Frozen Tube Boxes," here are the precise classifications:
| HS Code | Product Description | Application Scenario | Key Classification Logic |
|---|---|---|---|
3926.90.99.89 |
Other plastic articles (Lab Grade) | Specialized frozen tube racks/boxes | Other plastic articles: Not specified elsewhere, considered "other plastic goods." |
3926.90.99.10 |
Other plastic articles (Lab Grade) | General plastic frozen tube boxes | Other plastic articles: Fallback for plastics not in specific headings (3926 includes "other articles"). |
3923.10.20.00 |
Plastic Packaging (Specific) | Plastic boxes used for packaging | Plastic articles for packaging: Fits definition of "packaging articles." |
3923.10.90.00 |
Plastic Packaging (General) | Plastic boxes for transport/packing | Other plastic packing articles: General transport packaging. |
π Key Reminder: - Headings 3926 vs. 3923: - 3926: "Other articles of plastic" (often includes lab equipment, office supplies, etc.). - 3923: "Articles for the conveyance or packing of goods" (strictly packaging). - Why it matters: The tariff rates differ significantly based on whether the customs authority views your product as a laboratory good (3926) or a packaging material (3923).
π° 3. 2026 Latest Tariff Rate Breakdown (Including Surcharges & Policy Add-ons)
β Applicable Country: United States (US) β Origin: China (CN) β Effective Time: Post-November 2025 (Current 2026 Framework)
π― 1. 3926.90.99.89 & 3926.90.99.10 β Other Plastic Articles (Lab/General)
These two codes share the same tariff structure in the provided data. They are treated as "Other plastic articles."
| Item | Content |
|---|---|
| Base Tariff | 5.3% |
| Section 301 Surcharge | 7.5% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 22.8% |
| Tax Calculation | CIF Value Γ 22.8% |
| De Minimis Eligibility | β No (Subject to strict scrutiny) |
| Legal Basis Path | Base: 3926.90.99 β Section 301: 7.5% β Section 122: 10% |
π Explanation: - Base (5.3%): Standard Most Favored Nation (MFN) rate for other plastic articles. - Section 301 (7.5%): Additional duty on Chinese imports. - Section 122 (10%): Specific additional tariff applied to certain plastic goods from China. - Total 22.8%: This is the combined landed duty cost.
π― 2. 3923.10.20.00 β Plastic Packaging (Specific)
If the tube box is classified as a packaging article rather than a lab item, the tariff structure changes.
| Item | Content |
|---|---|
| Base Tariff | 0.0% |
| Section 301 Surcharge | 25.0% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35.0% |
| De Minimis Eligibility | β No |
| Legal Basis Path | Base: 3923.10.20 β Section 301: 25% β Section 122: 10% |
π Warning: - Although the base rate is 0%, the Section 301 surcharge jumps to 25% for this specific packaging subheading. - Total 35.0% is 12.2 percentage points higher than the 3926 classification!
π― 3. 3923.10.90.00 β Plastic Packaging (General/Other)
For other plastic packing articles not specified in 3923.10.20.
| Item | Content |
|---|---|
| Base Tariff | 3.0% |
| Section 301 Surcharge | 25.0% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 38.0% |
| Tax Calculation | CIF Value Γ 38.0% |
| De Minimis Eligibility | β No |
| Legal Basis Path | Base: 3923.10.90 β Section 301: 25% β Section 122: 10% |
π Note: - This is the highest tariff category (38.0%). - Even though it has a low base rate (3%), the 25% Section 301 penalty applies strictly here.
π οΈ 4. Customs Clearance Practical Advice (Battle-Tested Pitfall Avoidance Guide)
β 1. Documentation Checklist (Non-Negotiable)
| Document | Required? | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must detail material (e.g., Polypropylene PP, Polystyrene PS), dimensions, and temperature resistance range. |
| β Product Photos | βοΈ | Clear images showing the box structure, labels, and intended use (holding cryovials). |
| β Commercial Invoice | βοΈ | Must clearly state "Plastic Frozen Tube Box" or "Laboratory Storage Container." |
| β Packing List | βοΈ | Itemize quantities and weights. |
| β Material Safety Data Sheet (MSDS) | βοΈ | Proves material composition (crucial for HS Code verification). |
| β Certificate of Origin (CO) | βοΈ | Required to calculate correct Section 301 and 122 duties. |
β 2. Declaration Strategy (Key Mnemonic)
π₯ βLab Use = 3926 (22.8%), Pack Use = 3923 (35-38%)! Choose Wisely!β
| Scenario | Correct HS Code | Incorrect Action | Consequence |
|---|---|---|---|
| Specialized Lab Rack/Box | 3926.90.99.89 or .10 |
Declare as "Plastic Packaging" (3923) |
Overpayment: 38% vs 22.8% (15.2% difference!) |
| Shipping Box for Tubes | 3923.10.90.00 |
Declare as "Lab Equipment" (3926) |
Misclassification Risk: Customs may audit for fraud. |
| Generic Storage Bin | 3923.10.20.00 or .90 |
Use 3926 |
Audit Flag: If no lab connection, 3926 may be rejected. |
π Pro Tip: - If the product is sold directly to laboratories for sample storage, 3926 is the stronger argument. - If the product is a shipping container or general storage for non-lab use, 3923 is appropriate. - Documentation is Key: Provide product descriptions that emphasize "laboratory use," "cryogenic compatibility," and "sample storage" to support 3926.
β 3. Special Circumstances Handling
| Situation | Handling Advice |
|---|---|
| OEM Custom Boxes | Provide customer drawings and specifications. Clearly label as "Custom Laboratory Storage." |
| Mixed Shipments (Tubes + Boxes) | Declare separately. Tubes (if different HS) and Boxes should not be lumped into one line unless they are sold as a set. |
| Small Samples (< $800) | De Minimis Exemption DOES NOT APPLY for Section 301/122 duties on Chinese goods. Expect full duty assessment. |
| Transshipment via Third Country | High risk of "Origin Change" disputes. Ensure proper CO documentation to avoid anti-circumvention penalties. |
π 5. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Estimated Duty (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3926.90.99.89 |
22.8% (Best Option) | No specific lab cert required for import | Avoid 3923 (35-38%) if possible. |
| π¨π³ China | 3926 or 3923 |
5-10% | GB Standards | Lower base duties, no Section 301. |
| πͺπΊ EU | 3926 |
6.5% | REACH Compliance | No equivalent to Section 122. |
| π¬π§ UK | 3926 |
6.5% | UKCA Marking (if applicable) | Post-Brexit tariffs similar to EU. |
| π¨π¦ Canada | 3926 |
6.5% | CFIA (if food/med related) | NAFTA/USMCA may apply if US-made. |
π Conclusion: - The USA is the most expensive market for Chinese plastic lab consumables due to Section 301 and Section 122. - Strategic Choice: Classifying as 3926 (Other Plastic Articles) saves 12.2β15.2% in duties compared to 3923 (Packaging).
π 6. Common Errors & Pitfall Guide (Blood-Teachings)
β Error 1: Declaring "Plastic Frozen Tube Box" as 3923 (Packaging) when it is a Lab Item.
π Result: Pay 35-38% instead of 22.8%. Wasted Money.
β Error 2: Using vague descriptions like "Plastic Box."
π Result: Customs officer arbitrarily assigns 3923.10.90.00 (38%) due to lack of specificity.
β Error 3: Assuming De Minimis ($800) exempts Section 301/122 taxes. π Result: Full duties applied. Section 301 and 122 taxes are not exempt under Section 321 (De Minimis).
β Error 4: Mixing "Lab Tubes" (Glass/Plastic) with "Box" in one HS Code. π Result: Audit delay. Declare separately based on material and function.
β Correct Practice:
"Laboratory Plastic Frozen Tube Storage Box, Polypropylene, Cryogenic Compatible, Model XYZ, for Use in Biomedical Research."
π― 7. Conclusion: Smart Classification Saves 15% in Duties!
π― Remember the Mnemonic:
πΉ "Lab Box = 3926 (22.8%), Pack Box = 3923 (35%+)" πΉ "Don't let 'Packaging' define your Lab Gear. 15% savings is huge!" πΉ "Detail is King: Specify 'Laboratory Use' in descriptions."
π Pro Tip:
If your product is not originally from China, you may avoid Section 301 and 122 tariffs. Action: Apply for Advance Ruling from US Customs and Border Protection (CBP) to secure the 3926 classification before shipping.
π£ Immediate Action:
π Contact your freight forwarder + Provide Product Specs + Request HS Code Pre-Ruling π Clear Customs Smoothly, Reduce Costs, Boost Margins!
β¨ Professional Clearance Starts with Precise Classification! πΌ Every Percent Saved is Pure Profit!
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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) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β 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 β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β 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.