Your Vertically Integrated Filtration Partner

From Raw Filter Media to Finished Unit — One Factory, Zero Compromise

Guangzhou LJF Air Purification Equipment Co., Ltd.

Who We Are

Guangzhou LJF is a vertically integrated manufacturer of industrial air filtration solutions, strategically located just 10 kilometers from Guangzhou Baiyun International Airport in southern China. This prime location — at the heart of the Pearl River Delta manufacturing hub — enables efficient logistics and rapid international shipping for our partners worldwide.

We control the full production lifecycle under one roof: from raw filter media rolling and meltblown production to precision frame assembly and finished filter testing. By eliminating outsourced steps, we deliver factory-direct pricing, consistent quality, and rapid OEM/ODM turnaround that pure trading companies cannot match.

Today, we serve over 100 customers across 30+ countries. From bulk media supply for global distributors to custom HEPA systems for advanced cleanrooms, Guangzhou LJF is the trusted manufacturing backbone behind critical air filtration supply chains worldwide.

Why Partner with Guangzhou LJF

Advantage	What It Means for You
True Factory-Direct Pricing	We produce filter media from raw materials on our own production lines. No middleman, no intermediary markup — your procurement cost goes directly into product quality.
Flexible OEM / ODM	Custom slit widths, specific frame dimensions, private labeling on packaging — our vertically integrated lines adapt to your exact requirements without long retooling delays.
Low Minimum Order Quantity	We support businesses of all sizes. Low MOQ means you can test our quality with minimal commitment before scaling to container-level orders.
Fast, Reliable Shipping	Orders ship within 10–15 days of confirmation. Vacuum-packed media rolls and space-maximized container stacking reduce your freight costs. Located 10km from Guangzhou Baiyun Airport for seamless air and sea freight.
Certified Quality	ISO-certified quality management system. CE-certified products compliant with European safety and health standards. Tested to ISO 16890, EN 779, and DIN 53438-F1 (flame retardant).
One-Stop Sourcing	From pre-filters to HEPA, from raw media rolls to finished FFU units — source your entire air filtration catalog from one partner, simplifying procurement and logistics.

Core Products & Industry Solutions

Spray Booth & Surface Coating

For auto refinishing, furniture manufacturing, and industrial coating operations that demand flawless finishes and safe working environments.

● Ceiling Filter Rolls (F5-600G) — Fully tackified synthetic media for even airflow and high paint mist capture

● Fiberglass Paint Stop Floor Filters — High-loft fiberglass for maximum overspray holding capacity

● V-Type / Andreae Paint Arrestor Paper — Multi-layer kraft paper for high-efficiency paint mist separation

HVAC & Industrial Ventilation

Built for commercial buildings, hospitals, food processing facilities, and heavy industry.

● Pocket / Bag Filter Media Rolls — Synthetic non-woven media in bulk, available in G3–F9 efficiency grades

● Multi-Pocket Air Filters (Finished) — Ready-to-install bag filters for AHU and HVAC systems

● Pre-Filter Media (G3/G4) — Laminated mesh and synthetic rolls to extend main filter life

● Activated Carbon Filter Media — Odor and harmful gas removal for sensitive environments

● G4 Cardboard Pleated Pre-Filters — Disposable panel filters for cost-effective pre-filtration

Cleanroom & HEPA Filtration

For semiconductor plants, pharmaceutical labs, LCD manufacturing, and any environment requiring strict air purity.

● H13 / H14 HEPA Filters — 99.999% @ 0.3 microns. Every unit individually smoke-leak tested before shipment

● HEPA Mini Pleated Filters — Compact design for space-constrained cleanroom applications

● High Temperature HEPA Filters — Rated for elevated-temperature process environments

● Fan Filter Units (FFU) — Integrated cleanroom air delivery solution

● Laminar Flow Hoods — Sterile workstation for sensitive procedures

Our Facility

Located just 10 km from Guangzhou Baiyun International Airport, our ISO-certified factory integrates every stage of filter production under one roof:

In-house filter media production — synthetic meltblown, thermal bonding, and lamination lines

Automated pleating, frame cutting, and assembly equipment for finished filter units

Dedicated HEPA assembly cleanroom with individual smoke-leak testing for every H13/H14 unit

Vacuum-packaging and container-optimized stacking to minimize your freight cost per unit

Factory Tour

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Quality & Certifications

Every product we ship is backed by a rigorous quality management system and full-batch inspection protocols. Our certifications include:

● ISO 9001 — Quality Management System
● CE Marking — European safety and health compliance
● ISO 16890 — General ventilation air filter testing
● EN 779 — Particulate air filter classification
● DIN 53438-F1 — Flame retardant testing for filter media

Our Commitment

At Guangzhou LJF, we go beyond manufacturing filters. We aim to be your strategic partner in air quality management and supply chain security.

We engineer filtration solutions that:

Protect your critical environments with proven, repeatable performance
Optimize your operational efficiency with fast lead times and logistics expertise
Lower your Total Cost of Ownership (TCO) through factory‑direct pricing and durable product design

Whether you are a global distributor securing a stable bulk media supply, a paint booth operator requiring fast‑turnaround ceiling rolls, or an advanced cleanroom facility commissioning custom HEPA systems — Guangzhou LJF is here to empower your long‑term success with uncompromising reliability.

Ready to build a reliable filtration supply chain?

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