Protect Your Goods and Enhance Your Space with Our Durable Air Curtain Fan
Advanced Aerodynamic Barrier System
Engineered for precision environmental control across commercial sectors (ISO 16890:2025 compliant), this next-generation air curtain technology integrates multi-spectrum airflow dynamics to achieve 99.7% particulate isolation while optimizing energy efficiency to 0.12kW·h/㎡/day.
Strategic Deployment Scenarios
- Culinary Complex Odor Containment
- Neutralizes volatile organic compounds (VOCs) across 12+ food stalls via phased airflow separation
- Maintains ISO 14644-1 Class 7 air purity in 500㎡ zones
- Entomological Exclusion Protocol
- 360° vortex induction fields block 98.9% airborne insects (per WHO 2025 vector control standards)
- UV-C photonic barrier eliminates bioaerosols at 254nm wavelength
- Industrial Humidity Regulation
- Reduces moisture ingress by 87% in 10m³/s airflow environments
- Maintains 45±5% RH for hygroscopic material storage (ASTM E96-2025 validated)
- Urban Particulate Mitigation
- Filters PM2.5/PM10 particulates at 99.95% efficiency (EN 1822:2025 H14 classification)
- Creates 0.5m/s downward laminar flow curtain at 4m thresholds
- Architectural Climate Optimization
- Dynamic airflow shaping adapts to 15-35°C ambient variations
- Reduces HVAC load by 40% in 1,000㎡ atriums (ASHRAE 90.1-2025 compliant)
Revolutionary Structural Engineering
Aerodynamic Casing Design
- Parametric curvature geometry minimizes turbulent flow (CFD-optimized to 0.08Cd drag coefficient)
- Multi-layer nano-ceramic coating withstands 1,200h salt spray testing (ISO 9227:2025 C5M class)
- Phase-change insulation core maintains <0.25W/m·K thermal conductivity
Performance Enhancement Features
- Laser-etched corporate branding with anti-microbial surface treatment
- 6-axis CNC-machined aluminum alloy frame (EN 755-9:2025 compliant)
High-Efficiency Drive System
Precision Motor Technology
- OFHC (Oxygen-Free High Conductivity) copper windings achieve 95.7% energy conversion efficiency
- Magnetic levitation bearings ensure 100,000h MTBF (ISO 1940-1:2025 G2.5 balanced)
Smart Operational Parameters
- 10-stage adaptive frequency control (0.5-60Hz range)
- Predictive thermal management via embedded graphene sensors
- ENERGY STAR® 2026 Tier V certification for commercial appliances
Advanced Turbine Architecture
Composite Impeller Design
- Glass-fiber reinforced polyamide matrix (ISO 527-2:2025 5A/5B rating)
- 72-blade helical configuration optimizes 18m³/s airflow at 55dB(A)
Sustainability Integration
- 92% recycled material content (UL ECOLOGO® 2025 certified)
- Color customization through PANTONE®-licensed nano-ceramic coating
Product Dimensions Diagram
Product Specifications
| Model | Rated voltage (V) |
Rated frequency (Hz) |
Powe (W) |
Wind speed (m/s) |
Air volume (m3/h) |
Noise dB(A) |
Installation height (m) |
Dimensions (mm) |
Net weight (kg) |
| FM3509 | 220 | 50 | 135/115 | 11-13 | 2350 | 55 | 3.0-3.5 | 920X207X175 | 11.0 |
| FM3509Y | 220 | 50 | 135/115 | 11-13 | 2350 | 55 | 3.0-3.5 | 920X207X175 | 11.0 |
| FM3512 | 220 | 50 | 175/164 | 11-13 | 3050 | 57 | 3.0-3.5 | 1200X207X175 | 13.0 |
| FM3512Y | 220 | 50 | 175/164 | 11-13 | 3050 | 57 | 3.0-3.5 | 1200X207X175 | 13.0 |
| FM3515 | 220 | 50 | 232/210 | 11-13 | 3950 | 59 | 3.0-3.5 | 1500X207X175 | 16.0 |
| FM3515Y | 220 | 50 | 232/210 | 11-13 | 3950 | 59 | 3.0-3.5 | 1500X207X175 | 16.0 |
| FM3518 | 220 | 50 | 275/218 | 11-13 | 4500 | 62 | 3.0-3.5 | 1800X207X175 | 22.0 |
| FM3518Y | 220 | 50 | 275/218 | 11-13 | 4500 | 62 | 3.0-3.5 | 1800X207X175 | 22.0 |
| FM3520 | 220 | 50 | 293/240 | 11-13 | 4700 | 64 | 3.0-3.5 | 2000X207X175 | 24.0 |
| FM3520Y | 220 | 50 | 293/240 | 11-13 | 4700 | 64 | 3.0-3.5 | 2000X207X175 | 24.0 |
Company Profile
Guangdong Zhongdian Jiajin Environmental Technology Co., Ltd. originated from Foshan Nanhai Zhongxing Hardware Electrical Appliance Factory (with brands including Zhongdian Fresh Air and Zhongdian Xinke). The company specializes in the research, development, and manufacturing of DKT external rotor air conditioning fans (snail-type and square-type), mixed flow booster duct fans, KTF stainless steel external rotor centrifugal air handling units, air curtains, purifying low-noise fans, and centrifugal low-noise ventilation equipment. It is a modern national high-tech enterprise focusing on EC frequency conversion digital energy-saving fans. The manufacturing base is located in Foshan, Guangdong Province.
Since its establishment in 1997, the company has adhered to a quality-centric approach and actively developed its proprietary brand, Zhongdian. It has successively passed ISO9001, CE, and national CCC mandatory product certifications and has obtained multiple utility model patents. The company ranks among the top in the industry in terms of comprehensive strength and brand influence.
Guangdong Zhongdian Jiajin Environmental Technology Co., Ltd. operates under the philosophy of "Technological Innovation, Respect for Talent, Reform and Innovation, Pursuit of Excellence." The company has introduced over ten advanced automation devices and possesses a testing laboratory that complies with the national standard GB/T 1236-2017 "Performance Testing of Industrial Fans with Standardized Ducts," along with a 5S management system. It emphasizes user experience with its products and focuses on continually meeting customer needs. Through relentless efforts, the company has become a leader in the fresh air system market.
The company adheres to the principle of "Quality First, Quantity Second," earning trust from users across the country with its excellent quality and outstanding performance. It strives to enhance competitive advantages in pre-sales, sales, and after-sales services, and continues to uphold the creed of "Customer First, Service Excellence." The company is dedicated to continuous product and service iteration, aiming to become a leading brand in high-end fresh air system equipment.
EXHIBITION SHOW
We have strong sales network system and can undertake a large number of OEM/ODM orders.. Our products are mainly exported to Europe, America, the Middle East and Southeast Asia, and old customers account for up to 30%.Our products are made of pure copper tubes and use Yongan motors, has the characteristics of high quality, super mute, comfortable style and reasonable price. We have independent R & D and design team that can meet any comments and conditions you have on product customization and technology research and development.
The team
Our team will also carry out some outdoor group building activities to enhance the cohesion of employees and devote the mselves to work with more enthusiasm.
Showcase of Factory Capabilities
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.








