Through Wall Line
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 7307199080 | 41.2% | CN | US | 官方文档 |
| 7307995060 | 89.3% | CN | US | 官方文档 |
| 8544429010 | 87.6% | CN | US | 官方文档 |
| 8544422000 | 85.0% | CN | US | 官方文档 |
| 3917290090 | 38.1% | CN | US | 官方文档 |
| 3917390010 | 38.1% | CN | US | 官方文档 |
商品图片
AI分析
🔌 Through Wall Line (Extension Cords) – US Import Classification & Tariff Guide (2026)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition: What is a "Through Wall Line"?
A Through Wall Line (also known as a "wall-to-wall extension cord" or "in-wall power pass-through") is a specialized electrical assembly designed to pass power from one side of a wall or partition to the other without visible cabling on the surface.
It typically consists of: 1. Insulated Conductors: Copper wires with vinyl or rubber insulation. 2. Connectors: Plugs on both ends (often NEMA 5-15P or similar). 3. Voltage Rating: Typically rated for 1,000 V or less (standard household/commercial voltage). 4. Construction: May include a protective sleeve or rigid structure for wall penetration, but fundamentally classified as insulated electric conductors fitted with connectors.
⚠️ Key Distinction:
- If the product is merely a cable without connectors → It falls under 8544.42.90.00 (Unfitted).
- If the product includes plugs/connectors on both ends → It falls under 8544.42.90.10 (Fitted with Connectors).
- Crucial Note: This is NOT a telecommunications cable (which would fall under 8544.42.20.00). It is for general power distribution.
📦 II. HS Code Classification Detail (2026 Latest Tariff Authority)
Based on the provided data, the correct HS Code for "Through Wall Lines" (Extension Cords) is:
| HS Code | Product Description | Voltage | Fitted with Connectors? | Application Scenario |
|---|---|---|---|---|
| 8544.42.90.10 | Insulated electric conductors... Other electric conductors, for a voltage not exceeding 1,000 V... Extension cords as defined in statistical note 6 to this chapter | ≤ 1,000 V | ✅ Yes | Wall-to-wall power pass-through, standard extension cords with plugs |
🔍 Why not 8544.42.20.00?
- 8544.42.20.00 is for cables "of a kind used for telecommunications."
- Through wall lines are for power distribution, not data/telecom signals. Misclassifying them here leads to severe penalties.
💰 III. 2026 Tariff Rate Breakdown (Detailed Tax Explanation)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: 2025–2026 (Subject to ongoing trade policies)
🎯 1. 8544.42.90.10 – Extension Cords (Through Wall Lines)
| Item | Detail |
|---|---|
| Base Duty Rate | 0.0% |
| Additional Duty (301) | 0.0% |
| Steel, Aluminum, Copper Surcharge | 50% |
| Total Effective Duty Rate | 50.0% |
📌 Critical Explanation:
- Although the base tariff is 0%, the "Steel, Aluminum, Copper Products Surcharge" (50%) applies because extension cords contain copper conductors and often steel/plastic fittings.
- Total Tax = 50% of the CIF (Cost, Insurance, Freight) value.
- Legal Basis: This surcharge is imposed under specific trade measures targeting metal components. Even if the product is primarily plastic-insulated copper wire, the presence of conductive metals triggers this surcharge.
🛠️ IV. Customs Clearance Operational Advice (Pitfall Avoidance Guide)
✅ 1. Documentation Checklist (Must-Have)
| Document | Required | Notes |
|---|---|---|
| ✅ Commercial Invoice | ✔️ | Must clearly state: "Extension Cord, Through Wall, Insulated Conductors, Voltage ≤1000V, Fitted with Connectors" |
| ✅ Product Specification Sheet | ✔️ | Include wire gauge (AWG), length, plug type (NEMA), and insulation material. |
| ✅ Material Composition Statement | ✔️ | Specify percentage of copper, plastic, and steel. This is critical for proving surcharge applicability. |
| ✅ Photos of Product & Plugs | ✔️ | Show the connectors clearly to prove it is "fitted with connectors." |
| ✅ UL/ETL Certification | ✔️ | Safety certification is mandatory for electrical products in the US. |
✅ 2. Classification Accuracy (Key Mnemonics)
🔥 "Power ≠ Telecom; Copper ≠ Exempt!"
| Scenario | Correct HS Code | Error Risk |
|---|---|---|
| Through Wall Line (Power, with plugs) | 8544.42.90.10 |
❌ Do NOT use 8544.42.20.00 (Telecom) → 75% total tax! |
| Cable without plugs | 8544.42.90.00 |
Tax may be lower, but if sold as a "cord set," it must include plugs. |
| Telecom Cable (Data, with plugs) | 8544.42.20.00 |
Higher risk of audit; 75% total tax (25% + 50% surcharge). |
| Plastic Tubes/Pipes | 3917.29.00.90 |
Only if the product is a non-conductive sleeve/hose. If it contains wires, it is 8544. |
⚠️ Warning:
- If the product is a flexible plastic tube meant to house wires but does not contain wires, it may be classified under 3917.29.00.90 (Plastic Tubes, 0% tax).
- However, if it is sold as a "Through Wall Line", it implies functionality (power transfer). If it includes conductors, it must be 8544. Misclassifying a conductive cord as a plastic tube is fraud.
✅ 3. Special Handling for "Through Wall" Products
| Issue | Solution |
|---|---|
| Steel/Aluminum/Copper Surcharge (50%) | This is non-negotiable for copper wires. Factor this into your pricing. No exemptions for consumer goods. |
| Connector Type | Ensure connectors are standard NEMA 5-15P or equivalent. Non-standard plugs may delay inspection. |
| Wall Penetration Hardware | If sold as a kit with plastic sleeves, brackets, and seals, the entire kit is typically classified under the primary product (the cord), unless the hardware is separately invoiced and distinct. |
| Voltage Rating | Must be ≤ 1,000 V. If > 1,000 V, it falls under a different subheading with potentially different tariffs. |
🌍 V. Global Market Comparison (2026)
| Country/Region | Recommended HS Code | Duty Rate | Key Certification | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 8544.42.90.10 |
50% | UL, ETL, FCC (if any electronics) | Highest risk: 50% surcharge on copper. |
| 🇨🇳 China | 8544.42.90.10 |
~0-5% | CCC | Import duty may be low, but export from China to US faces 50%. |
| 🇪🇺 EU | 8544.42.90.10 |
~4% | CE, RoHS | No additional surcharges like US. |
| 🇬🇧 UK | 8544.42.90.10 |
~4% | UKCA | Post-Brexit rules apply. |
| 🇦🇺 Australia | 8544.42.90.10 |
~5% | RCM, SAA | Standard duty applies. |
📌 Conclusion:
- The US market is exceptionally expensive for through wall lines due to the 50% copper surcharge.
- Competitors in EU/UK/AU do not face this penalty.
- Strategy: Consider sourcing from countries not subject to the steel/aluminum/copper surcharge (e.g., Vietnam, Mexico) if possible, or absorb the cost.
📌 VI. Common Mistakes & Pitfalls (Lessons Learned)
❌ Mistake 1: Classifying through wall lines as "Plastic Tubes" (3917) to avoid tariffs.
👉 Consequence: Customs will inspect and find copper wires. Result: Back taxes, penalties, and seizure.
❌ Mistake 2: Classifying as "Telecommunications Cable" (8544.42.20.00).
👉 Consequence: Tax jumps to 75% (25% + 50% surcharge). Wrong description leads to audit.
❌ Mistake 3: Ignoring the 50% Surcharge.
👉 Consequence: Profit margins wiped out. The base rate is 0%, but the effective rate is 50%.
✅ Correct Declaration Example:
"Extension Cord, Through Wall, Insulated Copper Conductors, Voltage 125V, NEMA 5-15P Connectors, UL Listed, Model XYZ"
🎯 VII. Conclusion: Professional Clearance, Cost Optimization!
🎯 Key Takeaway:
🔹 "Through Wall Line = Extension Cord = 8544.42.90.10"
🔹 "Base 0% + Surcharge 50% = 50% Total Duty"
🔹 "Do NOT confuse with Telecom or Plastic Tubes!"
📌 Pro Tip:
- If your through wall line includes electronics (e.g., surge protection, USB ports), it may still be classified under 8544 if the primary function is power transmission, but ensure the electronics are minor. If it's a "smart plug," it might be 8537.
- Apply for Advance Ruling: If the product structure is complex, submit samples to US Customs for a binding ruling before shipping.
📣 Immediate Action:
📞 Contact a Licensed Customs Broker
📦 Provide Product Photos + Specs
🚀 Ensure UL Certification is Valid
💡 Factor 50% Duty into Your Pricing!
✨ Accurate Classification Saves Money!
💼 Every Percent Counts in Cross-Border Trade!
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关于 HS 编码归类
协调制度（HS）是由世界海关组织（WCO）制定的国际贸易商品分类标准。全球 200 多个国家采用 HS 系统作为海关关税、贸易统计和进出口监管的基础。
每个 HS 编码遵循以下层级结构：
- 章（2 位）——商品大类（例如：第 84 章：机器和机械设备）
- 品目（4 位）——章内的更具体分类
- 子目（6 位）——国际通用细分，所有 WCO 成员国统一使用
- 本国细分（8-10 位）——各国自行扩展的细分编码，如美国 HTSUS 10 位编码
正确的 HS 编码归类对于顺利通关、准确缴纳关税和遵守贸易法规至关重要。错误归类可能导致海关延误、多缴关税或罚款。
从CN进口到US时，适用的关税税率可能包括：
- 最惠国（MFN）税率——适用于 WTO 成员国的标准关税税率
- 普通税率——适用于无贸易协定国家
- 贸易救济关税——附加关税，如 301 条款（反倾销）、232 条款（国家安全）或反补贴税
本页内容仅供参考。如需正式归类，请咨询当地海关或持牌报关代理。