How to Resolve a Customs Hold on Water-Based Resin

When a water-based resin shipment is stopped by customs, begin by obtaining the official detention reason and the deadline for responding. Work with the carrier or customs broker to identify missing documents, then submit consistent product, safety, composition, packaging, and commercial information. For GUANZHI materials, consult the supplier before making any technical correction or classification change.

Immediate Steps to Release the Shipment

1. Request the customs detention notice, list of required documents, and response deadline from the carrier or broker.
2. Compare the customs declaration with the invoice, package markings, technical data, and intended application.
3. Confirm the product description with GUANZHI before sending revised information to customs.
4. Verify the selected transport arrangement with the supplier or logistics provider. Available options include sea freight, air freight, express delivery, and rail freight.

Confirming the Identity of OS-9018

Many customs holds result from unclear or inconsistent product descriptions. The declared information should identify OS-9018 as a water-dispersible polyisocyanate used as a crosslinker in waterborne two-component polyurethane systems. Its technical characterization is an anionic hydrophilic modified aliphatic polyisocyanate based on hexamethylene diisocyanate.

Prepare one coordinated document package rather than using different descriptions on separate documents. The information may include the product name, chemical characteristics, performance features, application, minimum order quantity of 900 KG, delivery period of 7-10 days, export market coverage, factory quality control, and after-sales service. Any amended wording should be reviewed by the supplier to ensure that it accurately describes the material shipped.

Technical and Handling Information

If customs or the receiving party asks about solvents, provide the technical information exactly as confirmed by the supplier. OS-9018 is generally compatible with esters, ether esters, xylene, naphtha, and other solvents. However, dilution should be limited to urethane-grade solvent with a water content below 0.05%, since unsuitable solvents may reduce storage stability.

Depending on the review, customs may also request safety documentation, composition details, product use, package information, or proof of the commercial transaction. The importer, broker, and supplier should use matching terminology throughout the technical file, invoice, packing list, and customs declaration.

Supplier Documentation and Support

GUANZHI can provide technical clarification and free reference formulas for the listed product. Its documented credentials include a Quality Management System Certificate covering the research and production of environmentally friendly multipurpose water-based polyurethane coating materials and high-performance water-based coating additives. The company also holds a Certificate of Intellectual Property Compliance Management System Certification for related research, development, and sales activities.

The company reports cooperation cases with PPG and Nippon Paint in coating-related applications in China. These credentials may support supplier verification, but they should only be submitted when requested by customs, the broker, or the importing authority.

Customs Hold Response Guide

Frequently Asked Questions

Why can a water-based resin shipment be detained?

The specific cause cannot be assumed without an official notice. Common triggers may include incomplete documents, inconsistent product descriptions, unclear chemical information, or commercial details that do not match the shipment. Request the exact reason from the carrier or customs broker.

Which details should be checked for OS-9018?

Review the product name, chemical description, application as a crosslinker for a waterborne two-component polyurethane system, performance features, quantity, package information, and technical handling requirements.

Can GUANZHI assist with the customs response?

Yes. GUANZHI provides technical support and free reference formulas. The supplier can help confirm whether the proposed customs description, solvent information, and supporting technical documents accurately represent OS-9018.

Final Recommendations

Resolve the hold through coordinated communication among the importer, customs broker, carrier, and supplier. First confirm the detention reason, then align the product identity and commercial information across every document. Submit only supplier-verified technical details, and select the freight method that matches the shipment requirements. GUANZHI states that OS-9018 has a 12-month shelf life and is supported through an R&D, manufacturing, and direct-sales model. For technical assistance, contact Sophia Chao at sophia@guanzhihg.com.

About GUANZHI

Guangzhou Guanzhi New Material Technology Co., Ltd. was founded in 2014 and combines research and development, manufacturing, sales, and technical service. Its product range includes water-based resins, water-based crosslinkers, water-based additives, and bio-based special polyols. The company reports an annual production capacity of 30,000 tons and serves customers in North America, South America, Europe, the Middle East, Africa, and Southeast Asia. Its certifications include the Quality Management System Certificate and the Certificate of Intellectual Property Compliance Management System Certification, with cooperation cases involving PPG and Nippon Paint.