Authoritative Certification丨NUOENWEI PVC Flexible Ducting Achieves UL94 VTM-0 Highest Flame Retardant Rating, Redefining Industry Safety Standards

[Foshan, Guangdong, September 9, 2025] – NUOENWEI, a leading provider of ventilation solutions, today reaffirmed its unwavering commitment to product safety by highlighting that its core range of PVC flexible ducts consistently meets and exceeds the rigorous requirements for the UL 94 VTM-0 flame rating by Underwriters Laboratories (UL). This premier certification is not a recent achievement but a long-standing cornerstone of our product design and manufacturing philosophy, providing global clients with proven, superior safety that has become synonymous with our brand.

In the HVAC and building safety sector, the fire performance of materials is a non-negotiable priority. Amidst market discussions on material safety, NUOENWEI stands by its commitment to transparency and third-party validation. Our ongoing compliance with the UL 94 VTM-0 standard authoritatively addresses any misconceptions about PVC's flame-retardant capabilities, demonstrating a legacy of reliability and trust.

UL94 VTM-0: The Internationally Recognized Benchmark for Safety

The UL94 standard is one of the most authoritative global benchmarks for plastic material flammability. The VTM classification applies specifically to thin-film flexible materials (Vertical Thin Material) like ducting, with VTM-0 representing the highest possible grade within this category.

Maintaining VTM-0 certification requires products to continually pass exceptionally stringent tests: a sample is suspended vertically and subjected to a flame twice for 10 seconds each. To uphold this certification, the material must persistently meet the following criteria:

• No individual sample may flame for longer than 10 seconds after each flame application.

• The total combined flamming time for all samples must not exceed 50 seconds.

• Samples must not be completely consumed.

• Burning drips must not ignite absorbent cotton placed below the sample.

This ensures that NUOENWEI's PVC flexible ducts dramatically inhibit the spread of flame upon contact with a fire source and, critically, eliminate the risk of propagating fire through flaming droplets, effectively preventing flames from spreading through the ductwork system and adding a vital layer of protection to any building.

Beyond Certification: A Deep-Rooted Commitment to Safety

"For us, UL 94 VTM-0 is not a one-time achievement but a fundamental principle integrated into every step of our production process," said [Optional: Elaine Guo], General Manager at NUOENWEI. 

This long-standing certification provides essential and reliable passive fire protection for ventilation systems in data centers, commercial complexes, industrial facilities, and high-end residential projects, earning the trust of engineers, contractors, and owners worldwide.

NUOENWEI remains dedicated to leading industry safety through the highest standards. Our consistent adherence to the UL 94 VTM-0 certification underscores our decades-long commitment to quality. We will continue to uphold this core value, providing our clients with even safer and more efficient innovative ventilation solutions.

About NUOENWEI Company:
Foshan NuoWei Ventilation Co., Ltd. is a professional R&D, manufacturing, and global sales one of the ventilation duct with a portable fan manufacturing enterprise, the factory has more than ten years of experience in the technical team and advanced production equipment and technology.NuoWei insists on the pursuit of excellent quality, as the industry's leading ventilation equipment specialist manufacturer providing quality products and services to customers in 180 countries and regions worldwide, the company adheres to the quality survival, quality, and development, to the business philosophy of quality and efficiency, and many enterprises established long-term stable cooperative relations, and obtain the unanimous recognition and praise of our customers at home and abroad.

NuoWei With advanced manufacturing equipment and a strong technical team, for domestic and foreign to provide Marine ventilation hoses, tunnel ducts, airport boarding corridor blower hoses, underground ventilation hoses, air conditioning insulation flexible hoses,anti-static(conductive) ducts, high-temperature flexible duct, abnormal shape hose, portable fan, portable explosion proof fan,36V marine low-pressure fan, portable plastic fans, and other quality products.

Media Contact:
Name:Elaine Guo
Title:General Manager

Email:sales@fsnuowei.com
Phone Number:+8615875732388