R&D and Technical Innovation
Pushing the boundaries of filtration science. From PhD-led research to standardized 30m³ test chambers, we invest in the technology that ensures your air is pure.
Advanced In-House Laboratories
Our facilities allow us to test every parameter of filter performance, from water absorption rates to CADR and microbial resistance.
▶ Nantong Deli — In-House Laboratory Testing & Quality Validation Process
30m³ Sealing Cabin
Standard temperature and humidity controlled chamber for testing CADR (Clean Air Delivery Rate), humidification capacity, and overall device performance under international standards.
Microbial Laboratory
Dedicated facility for testing product sterilization, antibacterial properties, and mildew prevention — essential for humidifier wicks and high-moisture air filters.
Air Channel Efficiency Line
International standard detection line for measuring purification efficiency, air resistance, and pressure drop across various filter media and finished products.
Humidifier Comprehensive Lab
Standardized test laboratory specifically for wet film and humidifier parameters, ensuring optimal performance of our composite evaporative media.
Filter Paper Test Room
Specialized equipment for screening and optimizing raw materials — testing water absorption rate, height, and wicking speed for our patented humidification wicks.
Proprietary Production R&D
We don't just buy machines; we build them. Our team develops independent, customized production equipment like our high-speed filter paper punching lines.
Intellectual Property Leadership
Nantong Deli has a sustained commitment to proprietary technology. Our "Industry-University-Research" collaborations with leading Chinese universities drive our patent portfolio.
54
Declared Patents
53
Authorized Patents
Core Filtration Technologies
Our R&D team, led by 2 PhDs, has developed several proprietary technologies for molecular-level air cleaning.
Microcapsule Technology
Slow-release delivery system for functional fluids, extending the lifespan of antibacterial and aromatic treatments in filter media.
Normal Temperature Catalysis
Highly effective catalytic removal of Formaldehyde and VOCs without the need for UV light or high temperatures.
Molecular Independent Loading
Advanced impregnation technique that bonds functional molecules directly to filter fibers for maximum contact and efficiency.
High-Speed Punching Process
Custom-engineered processing for humidifier filters that ensures high precision, controllable quality, and massive production capacity.
Partner with a Technical Leader
Leverage our PhD-led R&D team and 30 years of manufacturing experience for your next OEM air filtration project.
Request a Technical Consultation →Patent Portfolio by Technology Area
53 authorized patents from 54 declared, including 3 utility patents. The portfolio maps onto the four proprietary technologies described above, plus the production equipment we build for our own lines.
| Technology area | What the work covers | Where it shows up in product |
|---|---|---|
| Microcapsule slow-release | Encapsulation and controlled release of functional fluids into filter media. | Antibacterial and aromatic treatments that keep working through service life instead of washing out early. |
| Normal-temperature catalysis | Catalytic breakdown of formaldehyde and VOCs without UV or elevated temperature. | Activated carbon filters where a UV stage is not practical. |
| Molecular independent loading | Impregnation bonding functional molecules to the fibre rather than to a surface coating. | Integrated antimicrobial treatment in humidifier wicks — what separates a treated wick from a sprayed one. |
| High-speed punching process | Custom-engineered processing line for humidifier filter production. | Dimensional consistency across long runs, and no separate tooling charge for a new wick size at MOQ. |
What Each Laboratory Rules Out
Five laboratories sounds like marketing until you look at what each one prevents. Every one exists because a specific failure reached a customer at some point in the last thirty years.
| Facility | Failure it prevents |
|---|---|
| 30 m³ sealed cabin | A filter that meets its own specification but underperforms once fitted to the actual appliance. |
| Microbial laboratory | The smell complaint — the most common warranty return on any humidifier consumable. |
| Air channel efficiency line | Pressure-drop creep that quietly costs the end user airflow. See the HAF white paper. |
| Humidifier comprehensive lab | Output falling off long before the nominal replacement interval. |
| Filter paper test room | A bad paper lot reaching production — caught at goods-in rather than at the customer. |
Why Building Our Own Machines Matters to a Buyer
Developing production equipment in-house is unusual for a filter factory. It has three consequences that show up on a purchase order rather than in a brochure.
- Custom sizes are routine. When you own the punching line, a new wick dimension is a setup change rather than a capital request — which is why we do not charge separate tooling at MOQ 500 and above.
- Process changes need no vendor. A different media density or treatment level is adjusted in-house, not queued behind an equipment supplier's schedule.
- Consistency across long runs. Dimensional drift is a tooling problem, and owning the tooling is the only reliable way to control it.
Industry-University-Research Collaboration
Our R&D team is led by 2 PhDs and works with Chinese universities under formal industry-university-research collaboration agreements. That structure is where the normal-temperature catalysis and microcapsule work originated, and it is a deliberate choice about where a mid-sized manufacturer can realistically do original work.
A factory of our size cannot fund fundamental materials research alone. What it can do is contribute an application problem, a production environment to test in, and the volume to make a result commercially meaningful — while the university side contributes the underlying science. Formaldehyde catalysis without UV activation is a good example: an academically interesting problem that only matters commercially if someone can put it into a filter that ships.
For buyers the relevance is narrow but real. It means the treatments in our media have a documented development history rather than being a supplier's proprietary additive of unknown provenance — which matters when a customer's compliance team asks what is actually bonded to the fibre.