We are pleased to announce that the SUNLU FilaDryer S4 has successfully renewed its UL safety certification. This certification confirms that our product continues to meet international safety standards and reflects our commitment to product quality and user safety.
About UL Certification
UL certification is a globally recognized safety standard that evaluates the electrical and mechanical safety of products. Achieving this certification means the product meets safety requirements in the following areas:
✔ Fire resistance
✔ Electrical shock protection
✔ Mechanical stability
Why is UL Certification Important for Users?
For 3D printing users, choosing UL-certified equipment ensures greater peace of mind. As a globally recognized safety standard, UL certification means:
✔ Passed rigorous fire and electrical shock resistance tests
✔ Safe and reliable mechanical structure
✔ Complies with North American and international safety standards
✔ Effectively reduces potential hazards during use
The FilaDryer S4 strictly adheres to safety specifications in its design and manufacturing process, helping to minimize potential risks. "Obtaining UL certification requires careful consideration of multiple design factors," said a SUNLU product manager. "This demands that we meet the highest standards in circuit design, material selection, and manufacturing processes."
Beyond providing safe and stable filament drying, the FilaDryer S4 also offers the following practical features:
• PTC heating + 3 fans for higher efficiency and more even temperature distribution
• Heats up to 70°C, suitable for drying engineering filaments (PA, PC)
• One-touch drying with preset programs for common filaments—simply select the material, and the dryer automatically starts the process
• Holds 4 spools simultaneously, with 8 filament outlets to support multi-printer setups
• Smart humidity control—automatically reactivates when humidity exceeds the set threshold to prevent filament re-absorption
For more product details or to view the UL certification documents, please visit:
UL Solutions (Document Name: KSOT.E537567, KSOT7.E537567)
UL certification requires annual renewal, and we will continue to prioritize product safety improvements. SUNLU remains dedicated to providing safe and practical 3D printing accessories, ensuring a worry-free creative experience.
Stay tuned for more updates, and happy printing!