Acrylonitrile Styrene Acrylate ASA Resin
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🧪 Acrylonitrile Styrene Acrylate (ASA) Resin
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Logistics Strategy
📌 I. Product Definition & Classification: Do You Truly Understand "ASA Resin"?
Acrylonitrile Styrene Acrylate (ASA) is a terpolymer resin known for its excellent outdoor weathering resistance, impact strength, and chemical resistance. It is often used as a replacement for ABS in applications requiring long-term exposure to UV light and weather, such as automotive exterior parts, outdoor furniture, and piping systems.
In international trade, it is classified based on its physical form at the time of importation: 1. Primary Forms (Raw Material): Granules, powders, or liquids intended for further processing. 2. Semi-Finished Forms: Sheets, films, profiles, or tubes. 3. Finished Articles: Specific end-products (e.g., car bumpers, chairs).
⚠️ Critical Distinction:
- If imported as granules/powder (raw material) → Classified under Chapter 39.
- If imported as finished parts (e.g., a car bumper) → Classified under Chapter 87 (vehicles) or other relevant chapters.
- Note: This guide focuses on the raw material form (granules/powders), which is the most common import scenario.
📦 II. HS Code Classification Details (2026 Latest Tariff Reference)
| HS Code | Product Description | Application Scenario | Physical Form |
|---|---|---|---|
3903.90.90.00 |
Other acrylic polymers in primary forms | ASA resin granules/powders, raw material for extrusion/molding | ✅ Granules/Powder |
3903.30.00.00 |
Acrylic polymers in sheets, films, etc. | ASA sheets for signage, lenses | ✅ Sheets/Films |
3903.90.10.00 |
Other acrylic polymers (if specifically listed in local tariff) | Varies by country | ✅ Primary Forms |
3926.90.90.00 |
Other articles of plastics | Finished ASA products (e.g., buckets, toys) | ❌ Finished Goods |
🔍 Key Reminder:
- ASA is an acrylic polymer (styrene-acrylonitrile copolymer with acrylate rubber). It is not polyacrylonitrile (PAN) or polymethyl methacrylate (PMMA).
- If the resin contains reinforcing fibers (e.g., glass-fiber reinforced ASA), it may still fall under3903.90but verify local subheadings.
- Do not confuse with ABS (3903.30): ABS is a different copolymer. ASA is generally grouped under "other acrylic polymers" in many tariff schedules, but always check the specific national interpretation.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: From November 10, 2025 (for imports thereafter)
🎯 1. 3903.90.90.00 — Acrylic Polymers in Primary Forms (ASA Granules/Powders)
| Item | Content |
|---|---|
| Base Duty Rate | 5.3% (ad valorem) |
| USITC Surtax (Section 301) | +25% |
| IEEPA Surtax (China/HK Products) | +10% (effective Nov 10, 2025) |
| Total Duty Rate | 40.3% |
| Tax Calculation | CIF Value × 40.3% |
| De Minimis Eligibility | ❌ Not Eligible (deny_de_minimis) |
| Legal Authority Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3903.90.90.00 → FOOTNOTE:9903.88.01 |
📌 Explanation:
- The 25% USITC surtax applies under Section 301 of the Trade Act.
- The 10% IEEPA surtax is the new additional tariff for Chinese-origin plastic resins effective Nov 2025.
- Total: 40.3%, which is a high tariff burden. Proper declaration and potential duty mitigation strategies are essential.
🎯 2. 3903.30.00.00 — Acrylic Polymers in Primary Forms (If Classified Here)
| Item | Content |
|---|---|
| Base Duty Rate | 5.3% |
| USITC Surtax (Section 301) | +25% |
| IEEPA Surtax | +10% |
| Total Duty Rate | 40.3% |
| Tax Calculation | CIF × 40.3% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Authority Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:3903.30.00.00 → FOOTNOTE:9903.88.01 |
📌 Note:
- If your ASA is classified under3903.30(some countries group styrene-acrylonitrile here), the tariff remains 40.3% due to the same surtax structure.
- Always verify with the specific HTS code in your country’s tariff schedule.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance)
✅ 1. Document Checklist (Non-Negotiable)
| Document | Required | Description |
|---|---|---|
| ✅ Material Safety Data Sheet (MSDS/SDS) | ✔️ | For UN classification, if applicable (usually not hazardous unless granules contain additives) |
| ✅ Product Specification Sheet | ✔️ | Must state: “Acrylonitrile Styrene Acrylate (ASA) Resin, Primary Form (Granules)” |
| ✅ Certificate of Origin (CO) | ✔️ | To prove country of origin for surtax calculation |
| ✅ Commercial Invoice | ✔️ | Clearly describe as “ASA Plastic Resin Granules, UN 3077 (if applicable)” |
| ✅ Packing List | ✔️ | Detail net/gross weight, number of bags, palletization |
| ✅ Test Report | ✔️ | Certify no banned additives (e.g., certain phthalates) |
✅ 2. Declaration Tips (Key Mantra)
🔥 “Primary Form Only, No Finished Goods, Clear Material Name, Avoid Misclassification!”
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| ASA Granules/Powder | 3903.90.90.00 |
Misdeclare as “Plastic Parts” → 3926.90 → 200%+ tariff |
| ASA Sheets | 3903.30.00.00 |
Declare as “Raw Material” → Delay for further examination |
| ASA Bumper (Finished) | 8708.29 (Vehicle Part) |
Declare as “Resin” → Customs rejection for misdescription |
| Mixed Plastic Pellets | Separate by HS Code | Bulk declaration → Penalty for inaccurate value/classification |
✅ 3. Special Situations
| Situation | Handling Advice |
|---|---|
| Reinforced ASA (e.g., Glass-Fiber ASA) | Still 3903.90 if fibers < 20%. If > 20%, may fall under 3917 (articles of plastics). Verify locally. |
| Colored vs. Natural Granules | Both 3903.90.90.00. Color does not change classification. |
| Recycled ASA | If recycled from post-industrial waste, may still be 3903.90. If post-consumer, check for “Reclaimed” subheadings. |
| Biodegradable Additives | If additives make it biodegradable, still 3903.90 unless specified otherwise. |
🌍 V. Global Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Duty Rate (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3903.90.90.00 |
40.3% (incl. surtaxes) | None specific | High tariff due to IEEPA |
| 🇨🇳 China | 3903.90.90.00 |
6.5% | None | Basic import duty |
| 🇪🇺 EU | 3903.90.90.00 |
6.5% | REACH Compliance | Must register with ECHA |
| 🇬🇧 UK | 3903.90.90.00 |
6.5% | UKCA Marking (if finished goods) | Post-BREXIT rules apply |
| 🇦🇺 Australia | 3903.90.90.00 |
5.0% | Asbestos-Free Declaration | Standard import duty |
📌 Conclusion:
- USA is the most challenging market due to 40.3% total duty.
- EU, UK, Australia have moderate duties (5–6.5%) but require chemical compliance (REACH, etc.).
- China has low duties but may restrict imports of certain recycled plastics.
📌 VI. Common Errors & Pitfall Guide (Lessons from Blood & Tears)
❌ Error 1: Declaring ASA as “Plastic Waste” or “Recycled Plastic” without proof
👉 Consequence: Customs seizure, fines for misdeclaration of hazardous waste.
❌ Error 2: Using vague terms like “Plastic Material” or “Resin” without specifying “Acrylonitrile Styrene Acrylate (ASA)”
👉 Consequence: Customs classification delay, potential audit.
❌ Error 3: Ignoring IEEPA surtaxes for Chinese-origin resins
👉 Consequence: Underpayment of duties, penalty + interest.
❌ Error 4: Importing finished ASA parts but declaring them as raw materials
👉 Consequence: High duty evasion penalty, goods detained.
✅ Correct Practice:
“Acrylonitrile Styrene Acrylate (ASA) Resin, Primary Form, Granules, Unspecified Grade, Model XYZ, REACH Compliant, Made in China”
🎯 VII. Conclusion: Professional Declaration Saves Time & Money!
🎯 Remember the Mantra:
🔹 “Granules = 3903.90, Parts = Chapter 87/85, No Mixing!”
🔹 “HS Code Defines Duty, Surcharge Adds 35%, Declaration Precision Avoids Penalty!”
📌 Pro Tip:
If your ASA resin is originated from Vietnam, Mexico, Thailand, or Malaysia, you may apply for IEEPA Exemptions, reducing duties to 5–10%.
Recommend Advance Ruling from Customs to confirm classification and avoid post-clearance audits.
📣 Immediate Action:
📞 Contact a licensed customs broker + Provide Product Specs + Apply for HS Code Advance Ruling
🚀 Ensure your ASA resin, smooth customs clearance, efficient export, profit maximization!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every Penny of Cost Deserves Exact Calculation!
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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。