Application:
UV absorber UV-531 is an excellent and efficient anti-aging agent that can absorb 240-340 nanometer ultraviolet light. It has the characteristics of light color, non-toxicity, good compatibility, low migration, and easy processing. It has the greatest protective effect on polymers and helps to reduce color, while delaying yellowing and blocking physical property loss. It is widely used in PE, PChemicalbookVC, PP, PS, PC, organic glass, polypropylene fiber and ethylene vinyl acetate. It also provides good light stabilization effect for dry phenolic and alkyd varnishes, polyurethanes, acrylics, epoxies and other air-drying products, as well as automotive refinishing paints, powder coatings, polyurethanes, rubber products, etc. Dosage 0.1%-0.5%.
🚚 Shipping & Delivery Policy – Chemical & Laboratory Products
At Senzhuo Industries, we understand that timely and secure delivery of laboratory reagents, additives, and industrial chemicals is essential for your operations.
Processing & Packaging
Orders are processed within 1–2 business days after payment confirmation.
All products are packaged in compliance with international chemical transport standards (UN-approved containers, sealed caps, and hazard labeling).
Safety Data Sheets (SDS) are included with every shipment.
Shipping Methods
We partner with certified carriers experienced in handling chemical and laboratory products.
Options include standard courier, express delivery, and bulk freight forwarding.
Delivery times:
Domestic (Cameroon): 2–5 business days
International: 5–10 business days (subject to customs clearance)
Regulatory Compliance
Shipments comply with IATA, IMDG, and ADR regulations for hazardous materials.
Customers must ensure they are authorized to import regulated substances in their country.
Tracking & Updates
Each shipment includes a tracking number for real-time monitoring.
Our logistics team provides proactive updates on transit status and estimated delivery.
Damaged or Delayed Orders
If products arrive damaged, leaking, or delayed, notify us within 48 hours.
We will investigate and arrange a replacement shipment or refund where applicable.
Customs & Duties
International customers are responsible for customs duties, import permits, and clearance fees.
Senzhuo provides all necessary documentation and certificates of analysis to facilitate smooth clearance.
