GB Duct | China's Largest HVAC Duct Board Factory
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Core Performance Advantages
1. Exceptional Fire Performance
• Our Fire-Rated PU Insulation Panels are formulated with advanced flame-retardant additives
• Achieve Class A fire resistance certified to EN 13501-1:2018 and ASTM E84-22a standards
• Unlike traditional EPS or XPS insulation: no melting, no dripping, no toxic fume release when exposed to fire
• Provide critical life safety protection for building occupants and structural integrity
2. Industry-Leading Thermal Insulation
• Ultra-low thermal conductivity: as low as 0.022 W/(m·K) at 25°C
• Deliver the highest thermal efficiency among all rigid insulation materials
• Achieve required insulation performance with thinner panels
• Save valuable building floor space and reduce overall material costs
3. Fast & Efficient Installation System
• Patented interlocking tongue-and-groove design for perfect, airtight joints every time
• Panels are prefabricated to your exact project specifications
• Eliminate on-site cutting, waste and wet work
• A 2-person crew can install up to 500 m² per day
• Dramatically shorten construction schedules and cut labor costs by up to 50%
4. Long Service Life & Zero Maintenance
• Inherent closed-cell structure: 100% moisture-resistant and vapor-impermeable
• Prevent mold growth, water damage and structural deterioration
• Maintain full insulation performance for over 50 years with proper installation
• Require no regular maintenance throughout their entire service life
• Deliver superior long-term value compared to traditional insulation solutions

Why Choose Us
China's Largest HVAC Duct Board Factory | GB Duct, Established 1984
Rich Industry Experience
With over 40 years of experience in the HVAC industry, we have completed more than 10,000 projects worldwide.
Strong Production Capacity
We run 10 advanced automated production lines with a daily capacity of 30,000 sq.m, ensuring reliable quality and on-time delivery for large orders.
Professional Technical Team
Our experienced engineering team provides one-stop customized solutions and full-process professional technical support for all your project demands.
Competitive Factory Price
As a direct manufacturer without middlemen markup, we offer genuine factory direct prices, helping you save up to 20% cost compared with trading companies.
Comprehensive After-sales Service
We provide complete after-sales support, including on-site installation guidance, professional technical training and efficient problem solving anytime.
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