SGS D4 Glue Test Passed: Our Wood Panels Meet the EU’s Highest Water Resistance Standard
Core News: D4 Adhesive Standard Verified by SGS
In December 2026, Heze Linkedin Woodwork Co., Ltd. successfully completed the SGS aging test (DIN EN 204:2001) for our wood panel adhesives, earning the EU D4 classification—the highest level of water resistance for wood adhesive systems under European standards.
The rigorous test cycle (per DIN EN 204:2001) included:
- 7 days of room temperature conditioning
- 4 hours of boiling water immersion
- 1 hour of cold water soaking
- 18 hours of oven aging at 50°C ± 3°C
Test results (SGS Report No. SHMR241202497201) confirmed no cracking or delamination in our wood panels after both boiling water exposure and oven aging. This proves that our adhesive system fully complies with the D4 standard, validating its exceptional durability and water resistance for high-humidity and exterior applications.
Why D4 Matters for Global Markets
The EU D4 adhesive standard (DIN EN 204) is the most stringent classification for wood adhesives, designed to ensure structural integrity in demanding environments:
✅ Suitable for outdoor construction, humid interiors, and high-moisture applications
✅ Meets EU regulatory requirements for export to European markets
✅ Demonstrates a commitment to long-term product durability and customer safety
✅ Sets our products apart in global markets as high-performance, reliable wood solutions
This certification applies across our entire product range, including Paulownia wood, pine, poplar, thermally modified wood, and melamine-faced panels, ensuring consistent quality for all our global clients.
Production and Quality Commitment
D4 certification further attests to our over 16 years of professional expertise in timber processing and quality control. By strictly adhering to EU standards such as DIN EN 204, we ensure that the timber-based panels we produce meet the most stringent performance and environmental requirements, thereby providing robust support for our clients’ projects in the global construction, furniture manufacturing and green building sectors.
Sustainable wood panels with D4 adhesive certification
