In today’s global automotive manufacturing industry, technological innovation and smart production are becoming the main driving forces of development. From traditional internal combustion engine vehicles to emerging electric vehicles, every production step relies on precise technical support and efficient production processes. Key processes such as stamping, welding, painting, final assembly, and the integration of the power battery system form the foundation of automobile manufacturing, and each of these processes has different filtration requirements, which directly impact production efficiency, product quality, and the long-term reliability of the vehicle.
With the rise of electric vehicles, electrophoretic painting and power battery matching have become critical processes, and their filtration needs have become more prominent. At the same time, car owners’ concerns about cabin air quality have prompted innovation and application of automotive air filtration technology. HARBORY FILTRATION is committed to providing efficient and precise filtration solutions for the automotive industry, helping manufacturers improve production quality, ensure component performance, and promote the smart and green transformation of automotive manufacturing processes.
Key Filtration Processes in Automotive Manufacturing
1. Stamping and Welding
Stamping and welding are the first processes in automotive production. The stamping process uses a large amount of cooling and lubrication fluids to ensure smooth and precise surfaces for the molds and materials. In welding, filtering welding gases and cooling liquids is crucial for removing particles and slags produced during welding, ensuring the quality and strength of the welded joints.
2. Painting
The painting process is a critical step to ensure the quality and corrosion resistance of the vehicle’s exterior. During painting, the electrophoretic painting and topcoat liquid systems require extremely high levels of cleanliness. Any impurities can cause uneven coatings or defects, affecting the vehicle’s overall quality and appearance.
3. Final Assembly
Final assembly involves assembling various automotive systems and components into a complete vehicle. The cleanliness of the air filtration, liquid filtration, and lubrication systems directly impacts the performance and reliability of the entire vehicle. For example, the cooling fluids in liquid systems, the lubricants in power systems, and the filtration in air management systems must all have strict control over their impurity content.
4. Power Battery System Integration
With the rise of electric vehicles, the power battery system has become a critical component of the vehicle. The stability of the battery system directly affects the performance and range of electric vehicles. The filtration precision of fluids such as electrolytes, cooling liquids, and lubricants plays a crucial role in the battery’s efficiency, lifespan, and the stability of the Battery Management System (BMS).
Focus on HARBORY FILTRATION’s Applications in Automotive Electrophoretic Coating and Power Battery Matching
Precision Filtration in Electrophoretic Coating

Electrophoretic coating is an essential step in the vehicle painting process, using electrophoretic liquid to uniformly adhere the paint to the vehicle’s surface, ensuring corrosion and rust protection. The purity of the electrophoretic liquid directly affects the coating quality and the longevity of the equipment.
- Fluid Type: Electrophoretic liquid (including pigments, TiO2, carbon black, etc.)
- Fluid Characteristics: High viscosity, particle-sensitive, high pigment content
- Filtration Media: Bag filter housing, Filter bag
- Key Requirements:
- Removal of undispersed particles to ensure even paint adhesion
- Improved stability of the electrophoretic bath and extended lifespan
- Particle Size Range: 5–50μm
- Customer Value: Enhanced coating uniformity, reduced rework rates, and guaranteed paint film quality
High-Efficiency Filtration in Power Battery Systems

The cleanliness of electrolytes and cooling fluids directly impacts battery performance. HARBORY Filtration employs precise filtration technologies in electric vehicle power battery systems to remove fine particles from electrolytes and cooling fluids, ensuring stable battery operation.
- Fluid Type: Electrolytes, cooling fluids
- Fluid Characteristics: Low viscosity, highly corrosive, prone to degradation
- Filtration Media: PP Pleated filter cartridge, PTFE pleated membrane cartridge
- Key Requirements:
- Removal of dissolved particles to ensure electrolyte purity
- Increased cooling efficiency to ensure stable operation under high loads
- Particle Size Range: 0.1–5μm
- Customer Value: Enhanced battery efficiency, extended battery lifespan, optimized heat dissipation management
Deep Purification in Air Systems
With increasing attention to air quality by car owners, car cabin air filtration technology has become especially important. In the future, HARBORY Filtration will expand into automotive air filtration to provide efficient air purification solutions, ensuring the health and comfort of vehicle owners.
- Fluid Type: Cabin air
- Fluid Characteristics: Low viscosity, containing fine particles and harmful substances
- Filtration Media: Activated carbon cabin filter
- Key Requirements:
- Removal of airborne particles, pollen, bacteria, and harmful gases
- Ensuring fresh, odor-free cabin air
- Particle Size Range: 0.1–5μm
- Customer Value: Improved owner health and comfort, optimized cabin air quality, reduced allergy and respiratory disease risks
HARBORY FILTRATION Supporting the Future Development of the Automotive Industry
HARBORY Filtration is dedicated to providing efficient, precise filtration technology solutions for the automotive industry. We actively participate in key areas such as electrophoretic coating, power battery matching, and cabin air purification. With strong technical capabilities, we are able to offer manufacturers more innovative filtration technologies, improving production efficiency, ensuring component performance, and supporting the smart production of vehicles.
With the rapid development of smart manufacturing and the green automotive industry, HARBORY FILTRATION will continue to expand the application of its technologies, becoming a trusted filtration solutions provider in the automotive industry. We believe that through continuous innovation and business expansion, HARBORY FILTRATION will provide even more efficient, precise, and stable filtration technology support for customers, driving the sustainable development of the automotive industry.