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Commercial air purification system with true VOC decomposition technology by COTELL Air Tech, designed for long-lasting clean air in professional environments. Commercial air purification system with true VOC decomposition technology by COTELL Air Tech, designed for long-lasting clean air in professional environments.
We don’t just trap VOCs — we break them down.

This Is True VOC Decomposition.

COTELL Air Tech decomposes harmful gases at the molecular level for lasting air purity.
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All-in-one commercial air purifier for hotels, offices, and other professional environments — engineered for consistent clean air delivery across all spaces. All-in-one commercial air purifier for hotels, offices, and other professional environments — engineered for consistent clean air delivery across all spaces.
All-in-one solution for hotels, offices, and homes.

One Purifier. Every Space.

Flexible design, consistent performance — wherever clean air is needed.
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Nature-inspired air purification system by COTELL for commercial spaces — safe, sustainable, and designed to deliver a fresh, healthy atmosphere. Nature-inspired air purification system by COTELL for commercial spaces — safe, sustainable, and designed to deliver a fresh, healthy atmosphere.
Let nature-inspired air purification elevate your space.

Where Freshness Begins.

Purify with purpose — safe, sustainable, and refreshingly effective.
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COTELL commercial air purifier bringing forest-fresh air to hotels, wellness centers, and guest rooms — natural, calming, and revitalizing. COTELL commercial air purifier bringing forest-fresh air to hotels, wellness centers, and guest rooms — natural, calming, and revitalizing.
Nature, now inside.

Bring Forest-Fresh Air
Into Every Room.

Breathe the calm of the forest — right from your living room.
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K E Y   B E N E F I T S

Commercial air purifier with high-efficiency sterilization and virus inactivation — proven to eliminate over 99% of bacteria, SARS-CoV-2, H1N1, and RSV in public spaces.

Strong Sterilization & Virus Inactivation

• Kills>99% of Bacteria, Fungi, Viruses.

• Neutralizes>99.31% of SARS-CoV-2 & COVID-19.

• Eliminates>99.35% of H1N1 influenza A virus.

• Inactivates>99.27% of Respiratory syncytial virus.

Advanced commercial air purifier with high-efficiency formaldehyde, VOC, and odor decomposition — ensures long-lasting air purification in professional environments.

Superior HCHO & VOC & Odor Decomposition

• Decomposition >99% of Formaldehyde

• Remove >99% of VOC & ODOR

• Effectively breaks down harmful gases

• Ensuring long-lasting purification

Eco-friendly air purification system using certified, biocompatible materials — no toxic by-products, chlorine reactions, or carcinogens, ideal for healthcare and hospitality use.

Safe, Eco-Friendly, and Certified Materials

• Biocompatibility standards.

• No harmful by products.

• No chlorine-based reactions with organic matter.

• Does not produce carcinogens or toxic substances.

A P P L I C A T I O N S

COTELL air purification systems used at the 2022 Beijing Winter Olympics and 2024 Hangzhou Tennis Open — trusted for high-profile events and adaptable to diverse commercial environments. COTELL air purification systems used at the 2022 Beijing Winter Olympics and 2024 Hangzhou Tennis Open — trusted for high-profile events and adaptable to diverse commercial environments.

Designated Supplier of Air Purification Equipment

2022 Beijing Winter Olympics

                       &

2024 Hangzhou Tennis Open

AOP-KF® advanced oxidation material by COTELL — micro-nano bio-purification technology that decomposes formaldehyde, eliminates pathogens, and ensures non-toxic, certified air treatment for commercial use.
core material
AOP-KF® - the Next-Generation Bio-Purification Technology

Harnessing advanced micro-nano oxidation, AOP-KF® redefines clean air standards.
AOP-KF® is a micro-nano, eco-friendly advanced oxidation material featuring strong oxidizing power. It fully decomposes formaldehyde and destroys the enzyme systems of bacteria, fungi, and viruses for efficient sterilization. Certified by SGS for non-toxicity and safety, AOP-KF® ensures clean air without harmful by-products. This breakthrough technology is patented in both China and the United States.

COTELL air purification system with dual purification process — combining pre-filtration, HEPA H13, passive catalytic decomposition, and active chlorine dioxide treatment for complete air cleaning.
How It Works
Dual Purification: Passive and Active
• Step 1: Pre-filtration
Captures dust, hair, and large particles to protect core filters.
•Step 2: HEPA H13 Filtration
Romoves over 99.97% of fine particles, allergens, bacteria, and viruses.
•Step 3: Passive Decomposition 
COTELL Air Tech material catalytically breaks down harmful gases inside the unit.
•Step 4: Active Decomposition
Trace chlorine dioxide is released to actively neutralize airborne viruses and contaminants.
•Step 5: Final Output
Pollutants are converted into harmless carbon dioxide, water, and low-molecular compounds—leaving only clean, healthy air.
COTELL air tech air purification solutions
why choose cotell air tech
Brand Advantages

With 20+ years in smart hotel solutions, COTELL offers air purifiers built for commercial use. 

Unlike traditional HEPA or carbon filters, our patented AOP technology decomposes VOCs, odors, and formaldehyde at the molecular level—with no consumables, no frequent replacements, and no compromise on air quality.

Trusted by hotels and property developers, it’s the ideal air solution for renovations and new-build projects.

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TECHNOLOGY   COMPARISON

Technology comparison of COTELL Air Tech vs traditional filtration — featuring active decomposition of VOCs and formaldehyde, extended filter life, and low-maintenance, eco-friendly performance for commercial spaces. Technology comparison of COTELL Air Tech vs traditional filtration — featuring active decomposition of VOCs and formaldehyde, extended filter life, and low-maintenance, eco-friendly performance for commercial spaces.

Redefining Air Purification

COTELL Air Tech goes beyond traditional filtration by actively decomposing harmful gases like formaldehyde and VOCs into harmless substances.


It ensures deeper purification, longer filter life, lower maintenance costs, and a safer, greener indoor environment.

Lab-tested virus elimination rate chart for COTELL air purification system — proven effectiveness against airborne viruses in commercial environments.
Bacterial sterilization rate chart for COTELL air purifier — validated removal performance for safe indoor air in hospitals, hotels, and offices.
Fungal removal efficiency chart of COTELL air purification system — scientific data supporting high sterilization standards in public and healthcare settings.
Ammonia odor reduction efficiency chart — demonstrating COTELL’s capability to neutralize odors in commercial air purification applications.
VOC removal rate chart for COTELL air purifier — showcasing advanced decomposition of volatile organic compounds for long-term indoor air safety.
TEST RESULTS

Backed by science, built for safety.

Chart 1: Virus Elimination Rate

Chart 2: Bacterial Sterilization Rate

Chart 3: Fungal Removal Rate

Chart 4: Odor Reduction Efficiency (Ammonia)

Chart 5: VOC Removal Rate

Material has passed REACH SVHC, RoHS, VOC safetytesting for air quality.
Certified safe as a food additive, with animal testing confirming no harm.
Passed biocompatibility tests when used in face masks.
Showing no cytotoxicity, no skin irritation, no skin sensitization.
COTELL Air Tech integration across industries — compatible with HVAC systems, medical units, vehicle air solutions, and commercial air control systems for continuous purification.
COTELL air purification material integrated into HVAC systems — providing active, filter-free purification in large-scale commercial and industrial buildings.
Medical disinfection application of COTELL Air Tech — enhancing indoor safety through certified air purification in healthcare environments.
Scientific validation of COTELL Air Tech — lab-supported data demonstrating safe and effective air purification across commercial applications.
TECHNOLOGY APPLICATIONS

Expanding Air Purifications Across Industries

COTELL Air Tech powers more than air purifiers.
It can be integrated into HVAC systems, medical disinfection units, vehicle air solutions, and commercial air control systems — delivering continuous, active purification wherever clean air is needed.

HVAC Systems
Medical Disinfection Units
Automotive Air Solutions
Commercial Air Control

Air Purifiers Introduction

Suit for different needs
  • COTELL CTAT-600 upright air purifier with caster wheels — mobile solution for conference rooms, clinics, and open-plan offices.
    Model: CTAT-600

    Installation: Upright with casters

    Coverage Area: Up to 80㎡/720ft²

    PM CADR: 600m³/h

    Size: 768*328*328mm

  • COTELL CTAT-320 commercial wall-mounted air purifier — high-capacity AOP system for hotels, hospitals, and offices.
    Model: CTAT-320

    Installation: Upright or Wall-Mounted

    Coverage Area: Up to 40㎡/360ft²

    PM CADR: 320m³/h

    Size: 590*395*100mm

  • CTAT-300 versatile air purifier by COTELL — suitable for mid-sized commercial spaces with upright installation options.
    Model: CTAT-300

    Installation: Upright

    Coverage Area: Up to 35㎡/310ft²

    PM CADR: 300m³/h

    Size: Φ380*250mm

  • Compact CTAT-070 desktop and in-vehicle air purifier by COTELL — ideal for workstations, reception areas, and transport applications.
    Model: CTAT-070

    Installation: Tabletop / Desktop

    Coverage Area: Up to 8㎡/72ft²

    PM CADR: 70m³/h

    Size: 158*158*129mm

  • Portable CTAT-040 personal air purifier — lightweight design for desks, hotel nightstands, or on-the-go purification.
    Model: CTAT-040

    Installation: Desktop & Car Use

    Coverage Area: Up to 5㎡/45ft²

    PM CADR: 40m³/h

    Size: 400*165*65mm

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Why People Love It
  • COTELL air purifiers testimonial highlighting in hotel rooms

    “We’ve placed these units in all guest rooms. Not only did the air feel fresher, but guests started mentioning it in their reviews. It’s a small upgrade with a big impact.”

    Hotel Operations Manager, Singapore

  • COTELL air purifiers testimonial highlighting at clinic.

    “Installation was effortless, and the unit runs quietly even during busy clinic hours. We’ve noticed a significant drop in odors and allergens in our waiting areas.”

    Clinic Administrator, Germany

  • COTELL air purifiers testimonial highlighting in school class rooms

    “We were looking for a sustainable solution for our classrooms. This purifier is low-energy, quiet, and keeps the air clean all day. Parents really appreciate it.”

    School Administrator, UAE

  • COTELL air purifiers testimonial highlighting in hotel rooms

    “One of the main reasons we chose COTELL was the core material. It doesn’t rely on traditional filters or chemicals, which gives our team—and our guests—peace of mind.”

    Hotel General Manager, France

  • COTELL air purifiers testimonial highlighting at maternity center.

    “As a maternity center, we are extremely cautious about air quality. Knowing that this unit uses a safe, chemical-free material makes us feel completely at ease. It’s one less thing to worry about.”

    Facility Director, Mother & Baby Center, Thailand

  • COTELL air purifiers testimonial highlighting in conference center

    “We applied the AOP-based material to the central air system in a large conference venue during a high-profile international summit. With over 800 attendees in enclosed spaces, air quality was a top priority. The system delivered excellent performance, and both staff and delegates felt reassured and comfortable throughout the event.”

    Event Operations Director, International Conference Center, Netherlands