🔥 Get Full Catalog
Need a quote for Carbon Filter? Send airflow, static pressure, voltage and quantity — an engineer replies within 1 business day.Send specs to an engineer →

Buying from LONGWELL

  • Brand owner since 1990
  • Yuyao, Ningbo
  • 12-month standard warranty, extendable to 18–24 months by project agreement
  • Reply within 1 business day

Certificates you can check

Product certificates cover only the models listed on each document — ask which ones apply to your model. ISO certificates cover management systems, not products. Declaration of Conformity for your model and destination on request.

All document scans and what each covers

Test & release at LONGWELL

Specified and drawn by LONGWELL, built to our drawings by qualified partner factories, inspected and released to LONGWELL standards.

  • Wind tunnel · AMCA 210 method
  • Semi-anechoic room · sound power testing
  • Outgoing sampling to AQL 2.5
  • Test records retained for 5 years

How ordering works

  1. Spec check duty point & drawings
  2. Samples 1–3 days (stock models), fee credited to first order
  3. Validation on your bench
  4. Order T/T 30/70 (first order)
  5. Production & release 15–30 days, partner factory
  6. Shipping & after-sales FOB · CIF · DDP
Full terms, QC and FAQ
Current book for Carbon Filter

Carbon Filter

Longwell carbon filters utilize high-grade activated carbon to effectively adsorb odors, VOCs, and gaseous pollutants from exhaust air. This advanced filtration ensures a safer and more comfortable environment in demanding agricultural and industrial settings.
Our Longwell solutions are engineered for seamless integration with various ventilation systems, providing a reliable method for air purification. By choosing Longwell, you invest in durable performance and compliance with stringent air quality standards.