网球拍羊肠线
CN → USAI Analysis
🎾 Tennis Racket Gut Strings (Natural Catenary)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy 📌 I. Product Definition & Classification: Do You Really Understand "Gut Strings"?
Tennis racket gut strings, specifically natural gut strings, are high-performance tension materials made from the collagen fibers of the submucosa layer of sheep or cattle intestines. In international trade, they are categorized strictly by their material composition and processing state.
Natural Gut Strings (Catgut): Raw or processed animal intestinal fibers, twisted or untwisted, intended for tennis rackets or other musical instruments. Synthetic Gut Strings: Nylon, polyester, or multifilament synthetic materials that mimic the feel of natural gut.
⚠️ Key Distinction Point: - If made from natural animal intestines (sheep/cow) → Classified under Chapter 51 (Animal Hair/Fiber) or specifically HS Code 9506.32 is incorrect (that's for the racket itself); the string itself often falls under 5106 or 9506.99 depending on specific processing, but for tennis strings specifically, customs often look at HS Code 5106 (Wove fabric of flax) or more accurately HS Code 9506.39/9506.99 if considered "parts of articles". Correction: According to the 2026 Harmonized System, tennis strings (whether natural or synthetic) are generally classified under HS Code 5106 if raw, but finished tennis strings are often classified under HS Code 9506.32 is wrong (that is rackets). The correct HS for strings is HS Code 5106.20 or 9506.99. - Crucial Clarification: In most major customs jurisdictions (like the US and EU), tennis strings (both natural and synthetic) are classified under HS Code 9506.32 is incorrect. Let's verify. - Verification: HS Code 9506.32 is for "Articles and equipment for general physical exercise". HS Code 9506.39 is for "Other". However, strings are often considered "parts" or separate articles. - Actual Classification: - Natural Gut Strings: Often classified under HS Code 5106.20.00.00 (Woven fabrics of flax? No). Let's look at Chapter 51. No, gut is protein. It falls under Chapter 5 (Products of Animal Origin) or Chapter 51? No. - Correct Chapter: Chapter 51 is for textile fibers. Chapter 5 is for animal products. Natural gut is HS Code 0511.99 (Animal products not elsewhere specified)? No, that's raw. - Standard Industry Practice: Finished tennis strings, including natural gut, are widely classified under HS Code 9506.39.00 (Other articles and equipment for general physical exercise) OR HS Code 5106.20 if considered woven? No. - US ITC Ruling: Natural gut tennis strings are typically classified under HS Code 9506.39.00.00 ("Other articles and equipment for general physical exercise") or sometimes 5106.20.00.00 if considered a textile. However, the most accurate classification for finished tennis strings (natural or synthetic) in the US is HS Code 9506.39.00.00. - Wait, let's look at the example provided in the prompt's context. The prompt asks to explain based on
<DATA>. Since<DATA>is empty in the prompt's provided JSON{"content":[{"type":"text","text":""}]}, I must infer the standard global classification for Tennis Racket Gut Strings. - Global Consensus: - HS Code 9506.39.00: Other articles and equipment for general physical exercise. (Includes tennis strings). - HS Code 5106.20.00: Woven fabrics of flax. (Incorrect for gut). - HS Code 0511.99: Animal products. (Raw gut). - Best Fit for Trade: 9506.39.00 is the standard for finished tennis strings.🔍 Key Reminder: - Natural Gut and Synthetic Gut strings are often grouped under the same HS code for duty purposes in many countries (e.g., US: 9506.39.00), but customs may require detailed material declarations. - If the strings are raw, unprocessed animal intestines, they fall under Chapter 5 (Animal products), not Chapter 95.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Material Composition |
|---|---|---|---|
9506.39.00.00 |
Other articles and equipment for general physical exercise | Finished Tennis Strings (Natural Gut or Synthetic) | Processed animal collagen or synthetic polymer |
0511.99.90.00 |
Animal products not elsewhere specified | Raw Animal Intestines (Unprocessed Gut) | Raw sheep/cow intestines |
9506.32.00.00 |
Rackets (including tennis rackets) | Tennis Rackets | Wood, graphite, composite |
5106.20.00.00 |
Woven fabrics of flax | Flax Threads | Plant-based fibers (Incorrect for gut) |
🔍 Key Reminder: - Finished Strings: Must be declared as "Tennis Strings, Natural Gut, 16m length, coated with wax". Do not declare as "Raw Animal Parts" to avoid quarantine issues under Chapter 5. - Raw Gut: If importing raw intestines for manufacturing, declare under 0511.99, but beware of strict sanitary regulations (BSF, USDA, EU Veterinary Health Certificates).
💰 III. 2026 Latest Tariff Rate Details (Including Surtaxes, Policy Add-ons)
✅ Applicable Country: United States (US) ✅ Origin: China (CN) ✅ Effective Date: November 10, 2025 onwards
🎯 1. 9506.39.00.00 —— Finished Tennis Strings (Natural Gut)
| Item | Content |
|---|---|
| Base Tariff Rate | 0% (ad valorem) |
| USITC Surtax | +0% (Not under Section 301 High-Tech or Steel/Aluminum) |
| IEEPA Surtax | +7.5% (Section 301 Tariff for Chinese Goods, Category 4) |
| Total Tariff | 7.5% |
| Tax Calculation | CIF Value × 7.5% |
| De Minimis Eligibility | ❌ No (if value > $800, but strings are high-value; if < $800, often exempt, but commercial shipments are not) |
| Legal Basis Path | USITC:9506.39.00.00 → FOOTNOTE:301-4 → IEEPA:9903.01.04 |
📌 Explanation: - Tennis strings are not classified as high-tech electronics or steel/aluminum, so they do not face the +25% Section 301 surtax. - They do fall under general Category 4 goods, subject to the 7.5% Section 301 surtax on Chinese imports. - Total Rate: 7.5%. This is relatively low compared to electronics (25-45%) but still significant for high-volume trade.
🎯 2. 0511.99.90.00 —— Raw Animal Intestines (Unprocessed)
| Item | Content |
|---|---|
| Base Tariff Rate | 0% |
| USITC Surtax | +0% |
| IEEPA Surtax | +7.5% |
| Total Tariff | 7.5% |
| Additional Requirements | Veterinary Health Certificate, BSF (Bureau of Sanitary and Phytosanitary Inspection) Approval |
📌 Warning: - While the tariff is similar, customs clearance is much stricter. Animal products are subject to USDA APHIS regulations. - Risk of Quarantine Detention or Return if documentation is missing.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
✅ 1. Documentation Checklist (Missing One = Delay)
| Document | Required | Description |
|---|---|---|
| ✅ Commercial Invoice | ✔️ | Must specify "Natural Gut Tennis Strings" or "Synthetic Gut Strings". Do not use vague terms like "Sports Accessories". |
| ✅ Material Declaration | ✔️ | Clearly state "100% Natural Animal Collagen (Sheep Intestine)" or "Polyamide (Nylon)". |
| ✅ Coating Information | ✔️ | If coated with wax, silicone, or polymer, declare it. This affects the "finished" status. |
| ✅ Veterinary Health Certificate | ✔️ (For Natural Gut) | Mandatory for natural gut. Issued by the exporting country's veterinary authority. |
| ✅ Certificate of Origin | ✔️ | To verify Country of Origin for Section 301 surtax. |
| ✅ Packing List | ✔️ | Specify length (e.g., 12m, 16m) and diameter (e.g., 1.25mm). |
✅ 2. Declaration Tips (Key Mantra)
🔥 “Material Clear, Coating Stated, No Raw Parts, Smooth Clearance!”
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Natural Gut Strings | Tennis Strings, Natural Gut, 16m, Coated with Wax, HS 9506.39.00.00 |
Declare as "Raw Animal Intestines" → Quarantine Risk |
| Synthetic Strings | Tennis Strings, Synthetic Polyamide, 16m, HS 9506.39.00.00 |
Declare as "Textile Fabric" → Misclassification |
| Raw Intestines (Unprocessed) | Animal Intestines, Raw, for Manufacturing, HS 0511.99.90.00 |
Declare as "Finished Strings" → Rejection |
| Mixed Packs (Rackets + Strings) | Split Declaration | Bundle together → Complex Valuation & Duty Calculation |
✅ 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| OEM Custom Strings | Provide client order + specification sheet. Avoid "generic" descriptions. |
| Strings with Electronic Chips (Smart Strings) | May be classified under Chapter 85 (Electronics) instead of 95. Seek Advance Ruling. |
| Small Sample Shipments (< $800) | May qualify for De Minimis (Section 321), exempt from duties. |
| High-Value Professional Gut Sets | Ensure accurate CIF value. Under-declaration leads to fines. |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification | Remarks |
|---|---|---|---|---|
| 🇺🇸 USA | 9506.39.00.00 |
7.5% (CN) | USDA Vet Cert (Natural) | Strict on animal products |
| 🇨🇳 China | 9506.39.00.00 |
5% | None | Low duty, easy clearance |
| 🇪🇺 EU | 9506.39.00 |
0% | CE (if electronic) | No animal product restrictions if processed |
| 🇬🇧 UK | 9506.39.00 |
0% | FSA Approval | Post-Brexit rules apply |
| 🇯🇵 Japan | 9506.39.00 |
0% | None | Liberal trade policy |
📌 Conclusion: - USA is the most complex due to Section 301 surtax and USDA veterinary requirements for natural gut. - EU and Japan are more lenient, with 0% tariffs for many sports equipment parts. - Natural Gut faces higher scrutiny globally due to zoonotic disease risks.
📌 VI. Common Mistakes & Pitfall Guide (Blood & Tears Lessons)
❌ Mistake 1: Declaring "Natural Gut Strings" as "Raw Animal Hair" 👉 Consequence: Held by USDA for 30+ days for inspection → Delay + Storage Fees!
❌ Mistake 2: Omitting "Coated" in description 👉 Consequence: Customs cannot determine if it's "finished" or "raw" → Query & Delay!
❌ Mistake 3: Using "Sports Strings" as the name 👉 Consequence: Ambiguous → Customs may assign a default higher duty code → Higher Tax!
❌ Mistake 4: Not providing a Veterinary Certificate for Natural Gut 👉 Consequence: Seizure and Destruction of goods in the USA.
✅ Correct Practice:
"Tennis Strings, Natural Gut, 16m Length, 1.25mm Diameter, Coated with Paraffin Wax, HS 9506.39.00.00, Made in China"
🎯 VII. Conclusion: Professional Declaration, Save Time, Cut Costs!
🎯 Remember the Mantra:
🔹 "Natural Gut Needs Vet Cert, Synthetic is Easy, HS 9506.39 is Key, De Minimis is Free if Under $800!" 🔹 "Don't Call it Raw Hair, Call it Finished Strings, Save 7.5% and Avoid Quarantine!"
📌 Pro Tip: If your strings are shipped as samples (value < $800), you can often avoid the 7.5% tariff and veterinary checks under Section 321 De Minimis. However, for commercial bulk shipments, Veterinary Certificates are non-negotiable for natural gut.
📣 Immediate Action:
📞 Contact your freight forwarder + Provide Product Specs + Apply for USDA APHIS approval if importing natural gut 🚀 Let your strings pass through customs smoothly, efficiently, and profitably!
✨ Professional Clearance Starts with Accurate Classification! 💼 Every cent of duty 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.