Uncompromising Quality Control & International Standards
Operating under strict ISO, CE, and SGS certifications, we implement a 100% final performance testing protocol to ensure
every batch meets rigorous EN779 and ISO 16890 efficiency ratings.
Welcome to our Product & Quality FAQ section for air filtration products.
Q: What materials are used in your air filter media for durability?
A: We use 100% premium synthetic polyester fibers with an incremental density structure. This multi-layer design ensures maximum dust-holding capacity and air purity in industrial environments.
Q: How does "Stereo-Glue" technology improve filtration?
A: Our Stereo-Glue (Full-Immersion Adhesive) process coats every fiber layer with resin. This creates a 3D adhesive matrix that captures micro-particles throughout the media’s entire depth.
Q: What are the primary applications for your F5/EU5 filters?
A: Our F5 grade ceiling filters are engineered specifically for automotive spray booths and high-precision cleanrooms, providing a uniform, laminar airflow for a flawless paint finish.
Q: Are your air filters certified for fire safety?
A: Yes. We manufacture specialized Flame-Retardant Filter Media that is self-extinguishing and minimizes smoke emission, ensuring safety in high-heat industrial spray booths.
Q: What is the temperature resistance of your fiberglass media?
A: Our high-temperature fiberglass mats can withstand constant operating temperatures from 170°C to 250°C, making them ideal for paint-mist capture in baking ovens.
Q: How do you prevent fiber shedding in paint booths?
A: We utilize break-resistant thermal-bonded fibers and high-tack resin. This lint-free design prevents contamination, ensuring a zero-defect surface for sensitive painting projects.
Q: What is the dust-holding capacity (DHC) of your media?
A: Our media offers high DHC (e.g., 470G/㎡ for LH series). This extended capacity reduces replacement frequency, lowering the overall maintenance cost of your HVAC system.
Q: Can your activated carbon filters remove VOCs and odors?
A: Absolutely. Our Activated Carbon Media is optimized for the adsorption of volatile organic compounds (VOCs) and chemical odors, ensuring a safe and compliant working environment.
Q: How do you ensure consistent quality in every production batch?
A: As a source factory with 20 years of expertise, we implement strict QC protocols—from raw fiber testing to final airflow resistance checks—ensuring every roll meets export standards.
Q: What is the recommended replacement cycle for your filters?
A: For optimal efficiency, replace pre-filters weekly. Our premium Stereo-Glue ceiling filters offer a long service life of 500–600 hours, outperforming standard models.
Q: Does your F7 pollen filter comply with European ISO 16890 and EN 779 standards?
A: Does your F7 pollen filter comply with European ISO 16890 and EN 779 standards? A: Yes. Our high-efficiency F7 filters are fully tested to meet EN 779 standards and match the ISO 16890 ePM2.5 classification. We utilize premium synthetic, moisture-resistant media blends to guarantee stable resistance and exceptional dust-holding capacity for European AHU and MVHR ventilation networks.
Q: How does your factory ensure the cardboard frames stay rigid without buckling under high static pressure?
A: We construct our frames using double-wall, heavy-duty beverage board framed filter technology with high wet-strength properties. The filter media is laminated to a rust-resistant galvanized wire grid to maintain uniform V-pleat geometry, preventing frame twisting or buckling even at peak industrial face velocities.
Q: What efficiency grades and media types are available for your customized panel filters?
A: We offer a versatile range of filtration media tailored to your specific application targets:
G2 to G4 Grades: Standard primary filtration utilizing progressive-density synthetic non-woven media, ideal for capturing coarse dust in general HVAC systems.
F7 to F9 Grades: Specialized high efficiency pleated panel filters with cardboard frame options for cleanrooms, capturing sub-micron particles (95~98% efficiency) to safeguard terminal HEPA filters.
Activated Carbon: Available upon request for combined particulate filtration and gas-phase odor removal.
Q: Why Choose Chuqi as Your Cardboard Panel Filter Supplier?
A: As a vertically integrated manufacturer, Chuqi controls the entire supply chain from raw air filter media production to finished filter assembly. By engineering our own synthetic pocket filter media from scratch, we guarantee a high dust-holding capacity and ultra-low initial resistance while eliminating middleman markups to provide the most competitive factory-direct wholesale pricing. This seamless integration also allows our engineering team to instantly adapt production lines, delivering everything from standard pre-filters to specialized F9 high efficiency pleated panel filters with cardboard frame structures tailored to your exact technical specifications.
Q: How does the initial pressure drop of Chuqi ceiling filters impact my spray booth energy consumption?
A: A lower initial pressure drop directly reduces the load on your spray booth’s intake fans. By selecting Chuqi high-efficiency ceiling filters with optimized permeability, industrial facilities can significantly lower fan energy consumption while maintaining the precise, uniform airflow required for high-quality surface finishing.
Q: What is the recommended replacement frequency for fiberglass paint arrestor media in high-output production lines?
A: Replacement intervals depend on your specific paint volume and application process. We recommend monitoring the differential pressure gauge; once the pressure exceeds the manufacturer’s recommended threshold, the paint arrestor media should be replaced to prevent airflow restriction and maintain compliance with environmental emission standards.
Q: Are Chuqi’s activated carbon filters customizable for specific VOC and odor removal requirements?
A: Yes. We offer customized activated carbon media tailored to specific air-pollutant concentrations. Our technical team adjusts the carbon density and base material to ensure maximum adsorption efficiency for your facility’s unique operational environment.
Q: Is Spray Booth Ceiling Filter F5 or F6?
A: Standard ceiling media is F5 (EU5 / ISO ePM10 50%), capturing >95% of 10μm dust for auto refinishing. Premium OEM lines use F6 (EU6 / ISO ePM10 70%) with higher fiber density for zero-defect surfaces.
Q: How to Measure & Size Your Ceiling Filter?
A: Measure your booth plenum grid dimensions and add 20–50mm overlap per side. The dense sticky media compresses tightly against frame edges to eliminate dust bypass. Available in custom rolls or pre-cut blankets.
Q: 560g/m² vs 600g/m²? 15mm, 20mm, or 22mm Thickness?
A: 560g/m² (15–20mm): Standard refinish shops; low air resistance, cost-effective.
600g/m² (20–22mm): Heavy-duty OEM lines; maximum dust capacity, extended service life.
Q: Why do ceiling diffusion filters require full adhesive impregnation (tacky treatment) and scrim backing?
A: Full tackiness (adhesive treatment) and scrim reinforcement are essential features that guarantee zero fiber shedding and prevent particulate bypass in high-spec paint booths.
Full-Tack Impregnation (Adhesive Treatment): The synthetic fibers are fully saturated with a special sticky tackifier. This locks captured micro-particles and fine dust into the media depth, preventing particle migration into the booth even during airflow surges or equipment vibration.
Reinforced Scrim Backing: A polyester mesh woven backing on the air-leaving side adds structural integrity, prevents filter media sagging under air pressure, and stops glass fiber or synthetic lint from contaminating fresh paint finishes.
Q: How do ceiling filters ensure laminar air diffusion and uniform airflow inside spray booths?
A: Ceiling diffusion filters achieve uniform laminar airflow through a progressive density media structure combined with controlled static resistance.
Progressive Density Structure: The filter media transitions from coarse open fibers on the air-inlet side to dense micro-fibers on the clean air outlet side. This gradient structure traps larger particles early while forcing incoming air to distribute evenly across the entire ceiling plenum.
Laminar Airflow Creation: By creating balanced backpressure across the ceiling grid, the filter eliminates turbulence and air dead zones. This establishes smooth, vertical laminar airflow that flushes paint overspray directly down into exhaust pits for flawless automotive and industrial coating finishes.
