Clear epoxy resin

When evaluating clear epoxy resin, you must prioritize viscosity, Shore D hardness, and UV resistance. For deep-pour applications (like river tables), a low-viscosity resin is essential to allow air bubbles to escape, whereas high-viscosity resins are better for coating. Ensure the Shore D hardness rating is between 75-85 for optimal scratch resistance. Additionally, verify the inclusion of HALS (Hindered Amine Light Stabilizers) to prevent yellowing over time.

As a chemical product, clear epoxy resin must comply with REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for the EU market and TSCA (Toxic Substances Control Act) for the US. If the product is intended for food-contact surfaces (like countertops), it must have FDA 21 CFR 175.300 certification. Always request a current MSDS (Material Safety Data Sheet) and COA (Certificate of Analysis) for every batch to ensure chemical stability and safety.

To guarantee transparency, look for resins with a refractive index similar to glass. Request a degassing performance report or a video demonstration of the resin's self-leveling capabilities. High-quality suppliers on Made-in-China.com often provide test reports showing the VOC (Volatile Organic Compound) content, where a 'Zero-VOC' or 'Low-Odor' rating usually indicates a higher purity level and fewer impurities that cause cloudiness.

Epoxy resin typically has a shelf life of 12 to 24 months if stored in airtight containers. You should confirm that the supplier uses nitrogen-blanketed packaging to prevent moisture absorption during transit. The ideal storage temperature is between 15°C and 25°C; exposure to extreme cold can cause crystallization, which requires controlled heating to reverse before the product can be used.

Epoxy resin is often classified as Class 9 Miscellaneous Dangerous Goods for international shipping due to its environmental impact. You must ensure the supplier provides a UN-approved packaging (such as HDPE drums) and a Certification for Safe Transport of Chemical Goods. When shipping to the US or Europe, use DDP (Delivered Duty Paid) terms only if the forwarder is experienced in chemical clearance to avoid port seizures.

Focus on the mixing ratio (e.g., 1:1 vs 2:1 by volume) as this affects your total yield and cost-per-liter. Request a pre-shipment sample from the actual production lot and use Audit Reports available on Made-in-China.com to verify the factory's daily production capacity. For bulk orders, negotiate a tiered pricing structure where a 10-15% discount is applied for orders exceeding 1,000kg.

Always utilize Secured Trading Services offered by Made-in-China.com to ensure payment is only released upon confirmation of shipping documents. Include a clause in your contract specifying that the yellowing index (YI) must remain below a certain threshold for at least 12 months. For large-scale imports, hire a third-party inspection agency (like SGS or Intertek) to perform a loading supervision and verify the batch numbers match the COA.