In industries like semiconductor manufacturing, biotechnology, and lithium battery production, maintaining clean air is critical. Deshengxin’s EFU (Equipment Fan Filter Unit) and FFU (Fan Filter Unit) are designed to meet these demands—but how do they differ? This article explores their unique applications, working principles, and why Deshengxin’s custom EFUs stand out for automation and high-dust environments.
Application
EFU: Installed directly on equipment (e.g., lithography machines, lithium battery stackers) for localized filtration.
FFU: Ceiling-mounted for general cleanroom air purification.
Installation
EFU: Bolted to equipment with brackets; complex setup for targeted protection.
FFU: Gravity-sealed on ceiling grids for broad coverage.

Design & Customization
Deshengxin’s EFUs offer material flexibility (stainless steel, aluminum), motor options (EC/DC/AC), and HEPA/ULPA filters (H13-U16). FFUs are typically standardized.
Performance
EFUs feature intelligent controls for airflow adjustment and high dust resistance, ideal for lithium battery production.
Full In-House Production: Motors, filters, and control systems developed internally for quality assurance.
Industry-Specific Solutions: High-protection EFUs for lithium battery workshops.
Global Certifications: CE, ISO9001, and CQC compliance.
Upgrade your facility with our tailored EFU solutions. Contact us today!