10 Best Water Filter Manufacturers in China (2026 Factory Guide)

Why China Dominates Water Filter Manufacturing

China produces more than 60% of the world’s water filter cartridges and purification system components. From the replacement cartridges sold under European brands to the RO systems installed across the Middle East, the majority trace back to factories in Zhejiang, Guangdong, Fujian, and Jiangsu provinces. For importers, distributors, and private-label brands, choosing the right Chinese water filter manufacturer is the single most consequential decision in your supply chain.

This guide profiles the top 10 water filter manufacturers in China across the key product categories that matter to B2B buyers: standard replacement cartridges, quick-connect cartridges, UF membrane systems, RO membrane elements, activated carbon filters, and complete water purification units. Each profile includes factory location, core product lines, production capacity, certifications, MOQ guidance, and practical sourcing advice.

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How We Selected These Manufacturers

Our selection criteria focused on factors that directly impact international buyers:

• Export experience: Each company exports to at least 20 countries with established international sales teams.
• Certification portfolio: NSF/ANSI 42/53, WQA Gold Seal, FDA registration, or equivalent international certifications.
• Production scale: Minimum annual production capacity of 5 million cartridges or equivalent.
• OEM/ODM capability: Full private-label service including custom filtration media, housing design, packaging, and labeling.
• Quality management: ISO 9001 at minimum, with many holding ISO 14001 and HACCP as well.

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1. Ningbo XZH Environmental Technology (Star Navigation) — Quick-Connect & Standard Cartridges

Company Profile

Ningbo XZH Environmental Technology Co., Ltd. (brand: Star Navigation / HL Water) is headquartered in Ningbo, Zhejiang — the heart of China’s water filtration manufacturing cluster. Specializing in OEM/ODM water filter cartridges, XZH serves importers and distributors across 40+ countries with a product range spanning quick-connect cartridges, standard replacement cartridges, Everpure-compatible filters, and complete RO/UF systems.

Core Products

• Quick-connect filter cartridges: Inline cartridges with push-fit connections for Samsung, LG, Whirlpool, and other refrigerator brands. PP sediment, GAC, carbon block (CTO), and composite multi-stage media.
• Standard 10” and 20” replacement cartridges: PP melt-blown, string-wound, GAC, CTO, UDF, and T33 post-carbon cartridges in all standard housings.
• Everpure-compatible commercial cartridges: Drop-in replacement cartridges for commercial foodservice water filtration systems.
• Complete RO and UF systems: 5-stage and 6-stage residential reverse osmosis systems, U-type ultrafiltration systems, and under-sink filtration units.

Production Capacity & MOQ

Monthly capacity: 500,000+ filter cartridges. MOQ: 500 pieces for standard products, 1,000 for custom OEM configurations. Full private-label service including custom media formulation, housing color, cap printing, box packaging, and multilingual user manuals.

Certifications

ISO 9001, NSF/ANSI component certification, FDA registered, SGS testing reports, WQA membership. Products tested for contaminant reduction per NSF/ANSI 42 (aesthetic) and 53 (health) standards.

Why XZH for OEM

Unlike pure-volume factories, XZH provides integrated brand development support: product specification consulting, compliance documentation for target markets, product photography, and Amazon listing support for DTC brands. The Ningbo location offers direct access to Ningbo-Zhoushan port — the world’s busiest container port — minimizing inland logistics cost and transit time. Contact XZH for OEM inquiries and samples.

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2. Shenzhen Angel Drinking Water Group — Complete Purification Systems

Company Profile

Angel is one of China’s largest and most established water purifier manufacturers, with over 30 years of history. Headquartered in Shenzhen, Guangdong, Angel produces complete residential and commercial water purification systems, including RO systems, UF systems, water dispensers, and central whole-house filtration units.

Core Products

• Residential RO systems: 5-7 stage systems with tankless designs, 400-1000 GPD capacity, smart TDS monitoring.
• UF systems: Hollow-fiber UF systems for municipal water treatment, retaining beneficial minerals.
• Commercial systems: High-flow RO and UF for restaurants, hotels, and office buildings.
• Water dispensers: Point-of-use hot/cold/ambient dispensers with integrated filtration.

Production Capacity & MOQ

Annual capacity: 5 million units. MOQ: 500 units for standard models, 1,000 for OEM/ODM. Factory floor area exceeds 150,000 sqm.

Certifications

ISO 9001, ISO 14001, NSF/ANSI 58 (RO systems), CCC (China Compulsory Certification), CE, CB. OEM supplier to multiple European and Asian brands.

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3. Foshan Midea Water Purification — Smart Home Water Systems

Company Profile

Midea’s water purification division, based in Foshan, Guangdong, leverages the Midea Group’s massive manufacturing infrastructure and R&D investment. Their water products focus on smart, connected purification systems with app control, filter life monitoring, and automatic flushing.

Core Products

• Smart RO systems: Wi-Fi connected, app-monitored, with automatic filter replacement reminders and TDS display.
• Under-sink filtration: Compact units designed for Chinese and international kitchen configurations.
• Replacement cartridge sets: PP, GAC, CTO, RO membrane, and T33 cartridges for their system ecosystem.
• Water purifier faucets: Integrated filtration faucets for direct installation.

Production Capacity & MOQ

Part of Midea Group’s $50B+ ecosystem. Production capacity exceeds 3 million units annually. MOQ for OEM: 1,000 units. White-label options available for select markets.

Certifications

ISO 9001, ISO 14001, NSF, WQA Gold Seal, CE, CB, SAA (Australia), KC (Korea).

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4. Zhejiang Qinyuan Water Treatment — Commercial & Industrial Filtration

Company Profile

Qinyuan, headquartered in Cixi, Zhejiang (near Ningbo), has been manufacturing water treatment products for over 25 years. Their strength is in commercial and industrial water treatment equipment alongside residential products.

Core Products

• Commercial RO systems: 200-10,000 GPD capacity for restaurants, schools, and manufacturing facilities.
• Residential RO and UF: Standard and tankless designs for home use.
• Central water softeners: Ion-exchange softening systems for whole-house applications.
• Replacement cartridges: Full range of standard and proprietary cartridge formats.

Production Capacity & MOQ

Annual capacity: 2 million units. MOQ: 300 for residential systems, 50 for commercial equipment. Strong in Middle Eastern and Southeast Asian markets.

Certifications

ISO 9001, NSF, CCC, CE. WRAS (UK Water Regulations Advisory Scheme) certification for specific products.

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5. Xiamen Purerite Technology — Ceramic Filter Elements

Company Profile

Purerite is a specialized manufacturer of ceramic water filter elements — a niche but important category for gravity-fed and point-of-use systems in developing markets. Based in Xiamen, Fujian, they produce diatomaceous earth ceramic filters with silver impregnation for bacteriostatic properties.

Core Products

• Ceramic filter candles: Standard sizes compatible with British Berkefeld, Doulton, and Stefani gravity systems.
• Ceramic disc filters: For countertop and faucet-mounted filtration units.
• Custom ceramic elements: OEM shapes and sizes with customized porosity (0.2-0.5 micron) and silver loading.
• Ceramic + activated carbon combo: Dual-element cartridges combining ceramic pathogen barrier with carbon taste/odor reduction.

Production Capacity & MOQ

Monthly capacity: 500,000 ceramic elements. MOQ: 1,000 pieces. One of the few Chinese manufacturers with genuine expertise in ceramic water filter production.

Certifications

ISO 9001, NSF/ANSI 42 and 53, BS 5750 (British Standard). Products tested for bacteria reduction (E. coli, cholera, typhoid) at independent labs.

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6. Shanghai Canature Environmental Products — Whole-House & Water Softening

Company Profile

Canature is one of China’s largest manufacturers of whole-house water treatment equipment, including water softeners, central filtration systems, and automatic backwash filters. Headquartered in Shanghai with manufacturing in Jiangsu, they serve both residential and commercial markets globally.

Core Products

• Automatic water softeners: Timer and meter-controlled ion exchange systems with Fleck, Clack, and Canature-branded control valves. Capacities from 25,000 to 150,000 grain.
• Whole-house filtration: Multi-media filtration, activated carbon, and KDF systems in fiberglass and stainless steel tanks.
• Control valves: Canature manufactures their own automatic backwash control valves — a critical and high-value component.
• Brine tanks and mineral tanks: FRP (fiberglass reinforced plastic) pressure vessels for softener and filtration systems.

Production Capacity & MOQ

Annual capacity: 500,000 control valves + 300,000 softener/filter systems. MOQ: 50 units for standard systems. Major OEM supplier to European and North American water treatment brands.

Certifications

ISO 9001, NSF/ANSI 44 (water softeners), NSF/ANSI 61 (drinking water system components), WQA Gold Seal, CE, WRAS.

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7. Ningbo Olet Water Treatment — Residential Filter Systems

Company Profile

Olet, based in Ningbo, is a mid-sized manufacturer focused on residential under-sink and countertop water filtration systems. Their strength is in flexible OEM production with lower MOQs than the industry giants, making them accessible for smaller distributors and startup brands.

Core Products

• Under-sink RO systems: 4-5 stage systems with quick-change cartridge design. 50-100 GPD standard models.
• Countertop filtration: Single and dual-stage countertop filters with diverter valve for faucet connection.
• Gravity water filters: Stainless steel and food-grade plastic gravity-fed systems for markets without pressurized water supply.
• Shower filters: KDF + activated carbon shower head filters for chlorine and heavy metal reduction.

Production Capacity & MOQ

Monthly capacity: 100,000 filter systems. MOQ: 100 units for standard models — one of the lowest in the industry, making Olet suitable for importers testing new markets. Full OEM customization including box design and multilingual instructions.

Certifications

ISO 9001, FDA, SGS testing, CE. NSF testing available on request (buyer-funded for new product development).

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8. Guangzhou Litree Purifying Technology — UF Membrane Specialist

Company Profile

Litree is China’s leading manufacturer of hollow-fiber ultrafiltration membranes. Based in Guangzhou, they produce both residential UF cartridges and industrial-scale UF membrane modules for municipal water treatment. Their core technology is the PVC alloy hollow-fiber membrane with enhanced anti-fouling properties.

Core Products

• Residential UF membrane cartridges: Standard 10” and custom-size hollow-fiber UF elements with 0.01 micron pore size.
• Under-sink UF systems: 3-5 stage systems featuring Litree’s UF membrane as the core barrier.
• Industrial UF modules: Large-diameter membrane modules for municipal water treatment plants processing 100-100,000 tons per day.
• Membrane raw material: Litree produces their own hollow fiber membrane from PVC alloy resin — one of the few Chinese companies with this vertical integration.

Production Capacity & MOQ

Annual membrane production: 10 million square meters. MOQ for residential cartridges: 500 pieces. MOQ for industrial modules: project-based.

Certifications

ISO 9001, ISO 14001, NSF/ANSI 42/53, CE, various Chinese water treatment permits. Membrane technology patented in China, US, and EU.

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9. Haikou Hainan Litai Technology — Activated Carbon Block (CTO/ACB)

Company Profile

Litai specializes in activated carbon block (CTO) filter cartridges — the critical taste and odor reduction stage in most water filtration systems. Based in Hainan, they source premium coconut shell activated carbon and produce sintered carbon blocks with precise pore structure control.

Core Products

• Standard CTO cartridges: 10” × 2.5” and 20” × 4.5” carbon block cartridges in 1, 5, 10, and 25 micron ratings.
• High-capacity ACB cartridges: Extended-life carbon blocks with higher iodine value (1000+ mg/g) for superior chlorine reduction.
• VOC reduction cartridges: Specialized carbon blocks formulated for volatile organic compound reduction (benzene, MTBE, atrazine).
• Custom composite blocks: Carbon blocks with integrated lead reduction, cyst reduction, or scale inhibition media.

Production Capacity & MOQ

Monthly capacity: 2 million CTO cartridges. MOQ: 2,000 pieces for standard sizes, 5,000 for custom formulations. Competitive pricing due to direct coconut shell carbon sourcing.

Certifications

ISO 9001, NSF/ANSI 42, SGS testing reports for carbon quality (iodine value, benzene absorption, ash content). FDA material compliance.

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10. Zhuhai Livpure Water Purification — RO Membrane Elements

Company Profile

Livpure Water Purification, based in Zhuhai, Guangdong, manufactures residential and commercial RO membrane elements. They produce both standard 1812/2012 residential membranes and larger 4040/8040 commercial/industrial elements using TFC (thin-film composite) polyamide technology.

Core Products

• Residential RO membranes: 50, 75, 100, and 400 GPD capacities in 1812 and 2012 form factors. Compatible with all standard RO system housings.
• Commercial RO membranes: 4040 (1000 GPD) and 8040 (2400 GPD) elements for commercial and light industrial applications.
• Low-pressure RO membranes: Energy-efficient membranes that operate at 40-60 psi (vs standard 80+ psi), reducing pump energy cost.
• NF (nanofiltration) membranes: Selective membranes for water softening and partial desalination.

Production Capacity & MOQ

Monthly capacity: 300,000 residential membranes + 30,000 commercial elements. MOQ: 500 pieces for residential, 50 for commercial. Private labeling available with custom membrane wrapping and box printing.

Certifications

ISO 9001, NSF/ANSI 58, CE, SGS testing. Membrane performance tested per ASTM standards for rejection rate, flux, and recovery ratio.

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Comparison Table: Top 10 at a Glance

Manufacturer	Specialty	Location	MOQ	Key Certification
XZH / HL Water	Quick-Connect & Standard Cartridges	Ningbo, Zhejiang	500	NSF, FDA
Angel	Complete RO/UF Systems	Shenzhen, Guangdong	500	NSF/ANSI 58
Midea Water	Smart Home Systems	Foshan, Guangdong	1,000	WQA Gold Seal
Qinyuan	Commercial & Industrial	Cixi, Zhejiang	300	NSF, WRAS
Purerite	Ceramic Filter Elements	Xiamen, Fujian	1,000	NSF 42/53
Canature	Whole-House & Softening	Shanghai	50	NSF 44/61, WQA
Olet	Residential Systems	Ningbo, Zhejiang	100	FDA, CE
Litree	UF Membranes	Guangzhou, Guangdong	500	NSF 42/53
Litai	Activated Carbon Block	Hainan	2,000	NSF 42
Livpure	RO Membranes	Zhuhai, Guangdong	500	NSF/ANSI 58

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Regional Manufacturing Clusters

China’s water filter manufacturing is concentrated in specific industrial clusters:

• Ningbo-Cixi-Yuyao (Zhejiang): The largest cluster. Specializes in filter cartridges (PP, GAC, CTO), quick-connect systems, and residential filtration units. Home to XZH, Qinyuan, Olet, and dozens of smaller cartridge manufacturers. Excellent port access through Ningbo-Zhoushan.
• Pearl River Delta (Guangdong): Strong in complete system manufacturing, smart water products, UF membranes, and RO membranes. Home to Angel, Midea, Litree, and Livpure. Shenzhen provides electronics integration capabilities.
• Yangtze River Delta (Shanghai, Jiangsu): Focus on whole-house water treatment, commercial/industrial systems, and control valves. Home to Canature and several FRP tank manufacturers.
• Fujian (Xiamen, Quanzhou): Niche cluster for ceramic filter elements and some activated carbon products.

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How to Start Sourcing

1. Define your product specification: Cartridge type, filtration media, capacity, housing size, connection type, target performance standards (NSF 42, 53, 58, etc.).
2. Request samples from 3-5 manufacturers: Compare not just price but quality, communication speed, and willingness to customize.
3. Verify certifications independently: Check NSF listings at nsf.org, WQA at wqa.org, and request original test reports.
4. Start with a trial order: Before committing to large volumes, place a trial order (1x MOQ) and conduct incoming quality inspection.
5. Plan your compliance: Ensure your products meet import country requirements — NSF for North America, WRAS for UK, ACS for France, TZW/DVGW for Germany.

Contact XZH for OEM samples and pricing, or explore our product catalog to see available cartridge formats.

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Frequently Asked Questions

What certifications do Chinese water filter manufacturers need for export?

For North America: NSF/ANSI 42 (aesthetic effects like chlorine taste/odor), NSF/ANSI 53 (health effects like lead, cysts), NSF/ANSI 58 (RO systems), and WQA Gold Seal are the key certifications. For Europe: WRAS (UK), ACS (France), DVGW/TZW (Germany), and general EU food-contact material compliance (EU 10/2011 for plastics). For Australia: WaterMark certification. FDA registration is expected for any product entering the US market. Always verify certification status directly through the certifying body’s online database — certificate copies can be forged.

What is the typical MOQ for OEM water filter cartridges from China?

MOQ varies by manufacturer and customization level. For standard cartridges with custom labeling only: 500-2,000 pieces. For custom filtration media formulation (different carbon type, added KDF, custom micron rating): 2,000-5,000 pieces. For custom housing design requiring new molds: 5,000-10,000 pieces with mold costs of $3,000-$15,000. Some manufacturers like XZH offer MOQs as low as 500 pieces for standard products, making them accessible for smaller distributors testing new markets.

How do I verify the quality of water filter cartridges from China?

Follow a three-step verification process: (1) Request independent test reports — legitimate manufacturers have their products tested by accredited labs (SGS, Intertek, NSF International, WQA) for contaminant reduction performance. Ask for actual test reports, not just certifications. (2) Send samples to your own lab — independent testing at an accredited lab in your country provides the most reliable verification. Test for the specific contaminants your market cares about (chlorine, lead, VOCs, bacteria). (3) Conduct incoming quality inspection on every shipment — check cartridge weight (indicator of media fill), dimensional accuracy, and run a basic flow rate test. Weight variation of more than 5% between cartridges indicates inconsistent production.

What is the price range for OEM water filter cartridges from China?

FOB China prices for standard cartridge types at 5,000-piece order volumes: PP sediment 10” × 2.5” ($0.18-$0.30), GAC 10” × 2.5” ($0.60-$0.95), CTO carbon block 10” × 2.5” ($0.70-$1.10), T33 post-carbon ($0.40-$0.65), quick-connect inline cartridge ($1.50-$4.00), UF membrane cartridge 10” ($2.00-$5.00), RO membrane 50-100 GPD ($3.50-$8.00). Prices depend on media quality (coconut shell vs coal carbon, iodine value), housing material quality, and order volume. See our detailed water filter price guide for comprehensive pricing data.

Can Chinese manufacturers produce filters compatible with Aquaphor, 3M, Brita, or Everpure systems?

Yes. Many Chinese manufacturers produce replacement cartridges compatible with major brand systems. XZH produces Everpure-compatible cartridges and Aquaphor-compatible OEM cartridges. Compatibility means the cartridge fits the existing housing and connections — the filtration performance may differ from the original depending on the media specification. When sourcing compatible cartridges, always specify the exact system model and test the cartridge in the actual housing for proper fit, flow rate, and leak-free operation. Note that using another brand’s trademark on your compatible cartridge requires careful legal consideration — most importers use “compatible with” or “replacement for” language rather than the brand name itself.