July 08, 2026
At Shijiazhuang Yitong Filter Machinery Co., Ltd., we understand that every cleanroom has different airflow requirements, cleanliness classifications, and operating conditions. That is why we offer a complete range of air filtration products designed to meet the needs of various industries and HVAC systems.
Whether you need a standard replacement filter or a fully customized filtration solution, our engineering team can help you select the right product for your application.
Pre-filters are the first line of defense in a cleanroom HVAC system. They capture large airborne particles before the air reaches higher-efficiency filters, reducing the load on downstream filtration stages.
Key Features
High dust holding capacity
Low initial pressure drop
Long service life
Cost-effective protection for HEPA filters
Easy installation and replacement
Available Efficiency Grades
G2
G3
G4
Typical Applications
Commercial HVAC systems
Industrial ventilation
Air handling units (AHUs)
Cleanroom air supply systems
Medium efficiency filters provide the second stage of air purification. They remove finer particles that pass through the pre-filter, helping extend the service life of HEPA and ULPA filters.
Available Grades
F5
F6
F7
F8
F9
Advantages
Excellent particle capture efficiency
Low operating resistance
Stable airflow performance
Longer filter lifespan
Reduced maintenance costs
These filters are widely used in hospitals, laboratories, pharmaceutical plants, and commercial buildings.
Mini pleat HEPA filters are among our most popular products. Their compact design allows for a larger filtration area within the same frame size, resulting in lower pressure drop and higher dust holding capacity.
H13
H14
Product Features
High filtration efficiency for fine particles
Compact mini-pleat design
Uniform airflow distribution
Lightweight aluminum frame options
Reliable sealing performance
Long service life
Applications
Pharmaceutical cleanrooms
Electronics manufacturing
Operating rooms
Clean benches
Laminar flow ceilings
HVAC terminal filtration
For applications requiring high airflow and energy efficiency, our high-capacity HEPA filters provide outstanding performance.
Compared with conventional HEPA filters, these products offer:
Larger effective filtration area
Lower energy consumption
Higher airflow capacity
Reduced operating costs
Extended replacement intervals
These filters are ideal for large air handling units and central HVAC systems.
When ultra-clean air is required, ULPA filters provide the highest level of particle removal.
Efficiency Grades
U15
U16
U17
Typical Applications
Semiconductor fabrication plants
Microelectronics manufacturing
Aerospace production
Optical equipment manufacturing
Biotechnology laboratories
Our ULPA filters are manufactured using premium filter media to ensure excellent filtration efficiency while maintaining stable airflow.
V-bank filters are designed for high airflow applications where energy efficiency and long service life are priorities.
Their V-shaped configuration increases the effective filtration area while maintaining a compact size.
Advantages
High airflow capacity
Low pressure drop
Large dust holding capacity
Energy-saving design
Long replacement cycle
These filters are commonly used in commercial buildings, hospitals, data centers, and industrial HVAC systems.
Every cleanroom is different. To meet specific project requirements, Shijiazhuang Yitong Filter Machinery Co., Ltd. offers comprehensive OEM and ODM services.
We can customize:
Filter dimensions
Frame materials
Filter media
Gasket materials
Sealant types
Temperature resistance
Efficiency grades
Airflow requirements
Special installation structures
Whether you provide technical drawings or performance specifications, our engineering team can develop a solution tailored to your needs.
High-quality cleanroom air filters begin with advanced manufacturing technology.
At Shijiazhuang Yitong Filter Machinery Co., Ltd., we have invested in modern production equipment to ensure consistent product quality and efficient manufacturing.
Our production facility covers more than 23,000 square meters, with dedicated workshops for filter media pleating, frame fabrication, filter assembly, sealing, testing, and packaging.
Every manufacturing process follows standardized operating procedures to ensure consistent quality from raw materials to finished products.
Professional Production Process
Producing a high-performance cleanroom air filter involves much more than simply assembling components.
Our manufacturing process includes:
Raw Material Inspection
All incoming materials are carefully inspected to verify quality before entering production.
Filter Media Pleating
Advanced pleating equipment creates uniform pleats that maximize filtration area while maintaining consistent airflow.
Frame Manufacturing
Depending on customer requirements, frames may be made from:
Aluminum
Galvanized steel
Stainless steel
MDF
Plastic
Each frame is manufactured with precise dimensional accuracy to ensure proper installation.
Filter Assembly
Experienced technicians assemble each filter under strict quality control procedures.
Special attention is given to pleat spacing, adhesive application, and structural integrity.
Sealing Process
High-quality sealants are used to eliminate potential air leakage around the filter media.
Proper sealing is essential for maintaining filtration efficiency.
Product Testing
Every production batch undergoes comprehensive performance testing before shipment.
Strict Quality Control
Quality is the foundation of our business.
At Shijiazhuang Yitong Filter Machinery Co., Ltd., every cleanroom air filter passes through multiple inspection stages before leaving our factory.
Our quality control procedures include:
Appearance inspection
Dimensional verification
Frame strength inspection
Airflow testing
Pressure drop testing
Leak detection
Filtration efficiency testing
Packaging inspection
These rigorous inspections help ensure that every product delivered to our customers meets the required performance standards.
Premium Raw Materials
The quality of an air filter depends greatly on the materials used in its construction.
We carefully select premium materials to achieve excellent filtration performance and durability.
Filter Media
Micro glass fiber
Synthetic fiber media
High-efficiency melt-blown media
Frame Materials
Aluminum alloy
Galvanized steel
Stainless steel
MDF
ABS plastic
Separator Materials
Hot melt adhesive
Aluminum separators
Sealants
Polyurethane
Silicone
Each material is selected based on the customer's application, operating environment, and performance requirements.
OEM & ODM Manufacturing Services
Many customers require customized air filtration products rather than standard sizes.
As an experienced OEM manufacturer, Shijiazhuang Yitong Filter Machinery Co., Ltd. provides flexible customization services for distributors, engineering companies, HVAC contractors, and equipment manufacturers.
Our OEM services include:
Private label manufacturing
Custom dimensions
Custom packaging
Logo printing
Special frame structures
High-temperature filters
Gel seal HEPA filters
Knife-edge HEPA filters
Customized airflow designs
From prototype development to mass production, our engineering team works closely with customers to ensure every product meets project specifications.
Customers worldwide continue to choose us because we deliver more than products—we provide dependable filtration solutions backed by technical expertise and responsive service.
Our advantages include:
✔ More than 23 years of manufacturing experience
✔ Professional cleanroom air filter manufacturer in China
✔ Complete range of HVAC and cleanroom filtration products
✔ Advanced production equipment
✔ Experienced engineering team
✔ Strict quality management system
✔ OEM & ODM customization
✔ Competitive factory-direct pricing
✔ Fast production and on-time delivery
✔ Responsive technical support
✔ Export experience in Europe, North America, Southeast Asia, the Middle East, and other global markets
✔ Long-term partnerships with customers worldwide
Whether your project involves a pharmaceutical cleanroom, a semiconductor production line, or a hospital HVAC system, our team is ready to provide reliable filtration solutions tailored to your needs.
