Introduction
As a leading Chinese factory specializing in filtration products, we take pride in manufacturing premium string wound filter cartridges that deliver exceptional results across industries. With strict quality control, competitive pricing, and customizable solutions, our cartridges have become the go-to choice for buyers worldwide.
Discover why engineers and procurement managers consistently choose our filters for their critical applications.

Precision Engineering for Optimal Filtration Performance
How Our String Wound Cartridges Outperform Competitors
Our cartridges utilize a precision-wound design that creates a gradient density filtration matrix, ensuring:
✔ Progressive filtration - Larger particles trapped first, smaller ones captured deeper in the media
✔ Maximum dirt-holding capacity - Up to 3x longer service life than pleated filters
✔ Consistent flow rates - Maintains stable pressure drop throughout service life
✔ High contaminant loading - Handles heavy particulate loads without premature clogging
The result? Fewer changeouts, lower maintenance costs, and uninterrupted operations.
Technical Specifications That Matter

Industry-Specific Solutions
1. Water Treatment Applications
Pre-filtration for RO/DI systems
Municipal water treatment
Wastewater recycling
Swimming pool filtration
Recommended: 5-25μm PP cartridges with SS cores
2. Food & Beverage Processing
Sugar syrup clarification
Beer and wine filtration
Edible oil purification
Dairy product processing
Recommended: Food-grade PP or cotton cartridges
3. Chemical Processing
Acid and alkali filtration
Solvent purification
Paint and coating filtration
Pharmaceutical intermediates
Recommended: Chemical-resistant polyester or PP
4. Oil & Gas Applications
Fuel filtration
Lubricant purification
Hydraulic fluid cleaning
Offshore water treatment
Recommended: High-temperature glass fiber or polyester
Why Choose Us Over Other Suppliers?
✅ In-House Manufacturing - Full control over quality and production
✅ Advanced Winding Technology - Proprietary winding patterns for optimal performance
✅ Material Variety - Multiple yarn options for different applications
✅ Custom Engineering - Tailored solutions for unique requirements
✅ Competitive MOQs - Flexible order quantities from samples to bulk
✅ Global Certifications - ISO 9001, NSF, FDA-compliant options available
We don't just sell filters - we provide complete filtration solutions.

Easy Ordering Process
1. Share Your Requirements
Application details
Flow rate and pressure conditions
Preferred materials and specifications
2. Receive Expert Recommendations
Our engineers will suggest optimal solutions
Get technical drawings if needed
3. Sample Evaluation
Test our filters in your actual application
Verify performance before bulk order
4. Bulk Production & Delivery
Fast turnaround (7-15 days for standard items)
Worldwide shipping with proper documentation
Special Offer for New Customers
🔹 Free technical consultation
🔹 Discounted samples for testing
🔹 Volume pricing discounts
Limited-time offer - Contact us today!
Frequently Asked Questions
Q: What's the typical lifespan of your cartridges?
A: Depending on application, typically 3-6 months with proper maintenance.
Q: Can you match our existing housing specifications?
A: Yes, we regularly produce cartridges to match all major housing brands.
Q: Do you offer OEM services?
A: Absolutely - we can brand filters with your logo and packaging.
Q: What's your lead time for custom orders?
A: Generally 2-3 weeks after final confirmation.