Brand: ChengrongEra (诚荣时代®)

Function: Under sink water filter for drinking and cooking, clean and healthy; Unlike under sink reverse osmosis filter, which is clean but unhealthy

Filter Cartridge: Single Composite Cartridge with 4-stage filtration (pleated sediment filter → Activated Carbon Fiber → PP sediment filter → 0.01μm Chlorine-Removing Ultrafiltration Membrane,ChengrongEra proprietary technology, No second counterpart worldwide)

Filtration Precision: 0.01 μm

Compliance: Tested by SGS, complied with NSF/ANSI 58-2023 standards

Installation Location: under sink (kitchen)

Power Supply: Yes

Service Life of Filter Cartridge: Replace once a year 

Shell Material: 316L Stainless Steel 

Quality: 10 Years Rust-Proof, 10 Years Leak-Proof

Under-Sink Water Filter | 316L Stainless Steel 0.01μm Mineral-Retaining Under Sink Water Filter, Clean and Healthy | 4-Stage Under Sink Water filter for Clean&Heathy Water Drinking and Cooking

Single Composite Filter Cartridge with ACF & 0.01μm Chlorine-Removal UF Membrane, ChengrongEra Proprietary Technology, One and Only Worldwide

1. Chlorine-removing ultrafiltration membrane, ChengrongEra proprietary technology, no second counterpart worldwide, Ensuring the filtered water is clean and Healthy for drinking and cooking, Unlike RO water filter, whose pure water is clean but unhealthy

Adopting chlorine-removing ultrafiltration membrane, the ChengrongEra proprietary technology. Confirmed by authorized testing institutions in Shenzhen, it could reduce residual chlorine in househole water to an undetectable level, unrivaled globally.

With a filtration accuracy of 0.01 μm , the ChengrongEra under-sink water filter blocks 99.99% of bacteria, viruses, residual chlorine, sediment and other particulate impurities, delivering purified water clean for direct drinking. Unlike RO reverse osmosis water filters, it retains natural minerals in water, providing water that is both Clean and Healthy.

2. Single composite cartridge with 4-stage filtration and a scientifically optimized structure, second to none worldwide. Equipped with ample filter media, ChengrongEra under sink water filter offers high water flow and delivers great-tasting, clean and healthy drinking water.

Folded Cotton → Activated Carbon Fiber → PP Cotton → 0.01μm Chlorine-Removing Ultrafiltration Membrane, 4 types of filter media are scientifically compounded in one single cartridge, compact in size yet filled with ample internal filter media, apart from most peers that skimp on filter materials.  

0.01 μm chlorine-removing ultrafiltration membrane serves as the final filtration stage. It not only traps bacteria, viruses and residual chlorine from raw water, but also effectively intercepts contaminants generated from the front activated carbon fiber layer, rational structural design providing double protection for clean and healthy drinking water.

3. ChengrongEra under-sink water filter is tested by SGS and complies with NSF/ANSI 58-2023 standards. Meanwhile, certified by the Shenzhen Academy of Metrology & Quality Inspection (SMQ), the mineral-like water ChengrongEra under sink water filter produces fully meets direct drinking standards. Such superior performance is rarely rivaled in the industry.  

4. 316L stainless steel outer housing, not only premium in the matrials but also much thicker. In contrast, most competitors use standard 304 stainless steel, or even substandard 304 of poor quality. ChengrongEra Guaranteed: 10 years rust-free, 10 years leak-proof

a. Upper & lower cover thickness: 1.8 mm with 316L stainless steel, while the industry average ≤1.2 mm with 304 stainless steel.

b. Cylinder wall thickness: 1.45 mm, while the industry average ≤1.0 mm 304 steel.

c. Hydrostatic pressure test: over 400,000 cycles, far exceeding the national standard requirement of 100,000 cycles.

d. Quality guarantee: 10-year rust-free and leak-proof performance. Such reliable durability is unattainable for our peers. 

5. Unlike the unscientific countdown reminder commonly used by competitors, ChengrongEra features an intelligent filter replacement system based on actual water filtration capacity. 

6. Housewife-friendly design, tool-free disassembly, no professional assistance required. As a high-end factory brand, ChengrongEra boasts unmatched supply chain advantages over most brand peers. 

As one of China's top 3 manufacturers and the only full-supply-chain factory specializing in ultrafiltration membranes and water purifiers across the industry, we implement a full-staff joint quality control system. This rigorous management standard ensures ChengrongEra ranks within the top 1% in manufacturing quality, production craftsmanship and structural design.

Unlike competitors' multiple separate filter cartridges,

ChengrongEra under sink water filter integrates 4 types of filter materials into one single composite cartridge

Higher Filtration Efficiency｜Better Sealing｜More Compact Size｜Adequate Filter Material｜Higher Water Flow

The Size of the Cartridge:

Diameter: 163mm

Height: 386mm

ChengrongEra under sink water filter may not be the largest you've ever seen, yet few rivals can match our oversized cartridge and ultra-solid filter materials.

It is exactly why we deliver such impressive water flow, up to 660L/H, hard to find a second one worldwide. 

Backed by 19 years of professional ultrafiltration water filter manufacturing experience, we scientifically integrate 4 filter media into one unified cartridge, our peers cannot do it.

Even housewives without any technical background can replace the cartridge easily, without professional assistance.  

4-stage filtration with a scientifically designed structure, making the filtered mineral-retaining drinking water clean and  healthy; 

Unlike pure water from RO water filter, which is clean but unhealthy

Pleated Sediment Filter → Activated Carbon Fiber → PP Sediment Filter → Chlorine-Removing Ultrafiltration Membrane

chlorine-removing ultrafiltration membrane, ChengrongEra proprietary technology, No second counterpart worldwide

1st Stage: 5μm Pleated Sediment Filter

Filtration rating: 0.05μm, intercepts large impurities such as sediment and rust in water. 

2nd Stage: Activated Carbon Fiber (ACF)

In order to improve water taste for a better drinking experience, the ACF is primarily used to adsorb residual chlorine, odors and discoloration in water, along with certain organic substances and heavy metals. The ACF in the chengrongEra under sink water filter, with filtration capacity for up to 200 tons of water, second to none worldwide. 

Unlike our competitors who adopt low-cost granular activated carbon (GAC), ChengrongEra under sink water filter uses high-quality activated carbon fiber (ACF), which boasts a specific surface area 400 times larger than granular activated carbon. It could provides far more adsorption sites, faster contaminant absorption and superior performance in removing chlorine, odor and organic matter.

3rd Stage: 5μm PP Sediment Filter

It mainly used to fixe and support the loose ACF material, while providing effective protection for the subsequent chlorine-removal ultrafiltration membranes, with a filtration rating of 5μm. 

4th Stage: 0.01μm Chlorine-removing Ultrafiltration Membrane

Please answer me: 

Are you on well or municipal water? Do you have lab results on a water test? If you don't know the answer to the first and lab results in hand, you aren't ready to spend smart money.

1) Get your water test report first, the safety of your water source matters most

If your main goal is better taste and cleaner water for drinking and cooking, then what you wanna is a WATER TEST REPORT first.

2) With water safety guaranteed, Water hardness and TDS levels directly cause mineral buildup and limescale 

For water TDS<300, choose ChengrongEra under sink water filter, beneficial natural minerals are retained, Clean and Healthy

For water TDS>300, choose under sink RO water filter, it could cut down the mineral buildup, Clean but Unhealthy

Under sink RO water filters could removes all substances in water, good and bad. It is suitable for water with high hardness, and water sources with safety concerns, such as well water with excessive fluoride. 

However, if your tap water or spring water is safe, and the water hardness is low (TDS<300), then ChengrongEra under sink water filter is more suitable for you, as it can remove the bad, while retaining the beneficial minerals in water, making the filtered water Clean and Healthy just like the mineral water.

Conclusion:

RO water filter is overkill for most tap water; while regular UF water filter leaves chlorine behind. 

ChengrongEra under sink water filter, with the chlorine-removing ultrafiltration membrane equipped, delivers the perfect balance: chlorine-free, safe drinking water with beneficial minerals kept intact.

Thus,

RO water filter=Clean but Unhealthy for drinking;  ChengrongEra under sink water filter=Clean and Healthy for drinking

Chlorine-removing ultrafiltration membrane is a proprietary technology of ChengrongEra, one and only worldwide

Unlike competitors' unscientific fixed-countdown filter replacement alerts

ChengrongEra under sink water filter uses self-designed intelligent filter reminders based on total water filtration capacity

When the filter cartridge indicator, on the ChengrongEra under sink water filter base, changes from Blue to Red, then it is time to replace the cartridge. Under normal use, the service life of  filter cartridge is 1 year.

Even Housewife can replace the cartridge easily, NO professional assistance required

316L stainless steel housing, unavailable among our 99% peers 

100% internal polishing and high-temperature ultrasonic cleaning ensure top hygiene and safety, while most competitors skip these processes to avoid high environmental costs.

User-friendly

Housewife-friendly

Tested by SGS, 

Complied with NSF/ANSI 58-2023 standards

316L stainless Steel 

NO leakage & NO rust for 10 years

Tested by Authoritative Institutions, Compliant with NSF/ANSI 58-2023 Standards & Direct Drinking Grade 

ChengrongEra Under Sink Water Filter, Clean&Healthy, Hard to Find a Second Counterpart Worldwide

Tested and certified by SGS:

1) Chengrong PVC ultrafiltration membrane cartridge complies with NSF/ANSI 58-2023 Standard (2025-9-26);

2) Chengrong PVC ultrafiltration membrane cartridge complies with NSF/ANSI 42-2023 Standard (2025-9-26);

3) ChengrongEra under sink water filter (including chlorine-removing PVC ultrafiltration membrane) complies with NSF/ANSI 58-2023 Standard (2026-4-30).

Tested by Shenzhen Academy of Metrology & Quality Inspection, which is official authority:

1) Residual Chlorine Removal Performance Test：

The residual chlorine in drinking water was spiked to 2.02 mg/L first, then filtration with Chengrong PVC chlorine-removal ultrafiltration membrane, the residual chlorine content dropped to 0.02 mg/L, reaching the minimum detection limit of the testing equipment, the residual chlorine removal rate is as high as 99.99% and above (2024-2-27).

2) Direct Drinking Water Compliance Test:

a. Qualifies for direct drinking use in China: ChengrongEra Under-Sink Water Filter meets CJ/T 94-2005 fine drinking water standards. (2026-4-29)

b. Achieve global direct drinking grade: ChengrongEra Under-Sink Water Filter, tested by SGS, meets NSF/ANSI 58-2023 standards.  (2026-4-30)

We've covered all the details of ChengrongEra under-sink water filter, 

Now, ChengrongeEra wanna invite you to take a moment to learn about Chengrong Ultrafiltration Factory

Chengrong Ultrafiltration Factory, the core reason ChengrongEra ultrafiltration water filters consistently rank among the top 1% in the industry for manufacturing quality, product functionality, and structural design.

With 18 years of expertise in ultrafiltration water filter production,

Chengrong Factory proudly presents its exclusive in-house brand — ChengrongEra® 

As a top 3 manufacturer in the industry, ChengrongEra ultrafiltration water filter ranks among the top 1% in manufacturing quality, product performance and structural design. ChengrongEra under sink water filter, quality aligned with global first-tier brands. 

Top 3 Manufacturer 

Chlorine-removing ultrafiltration membranes, 

one and only wordwide,

is self-developed by Chengrong Factory

Fully Integrated 

Supply-Chain Factory

No other manufacturer in the industry can match

Trusted OEM/ODM

for multiple global first-tier water filter brands

Chengrong Ultrafiltration Membranes, Global Leading Brand Approved Excellence: Leading global brand required a flow rate decay of no more than 30%–40% after filtering 200 tons of water, however, Chengrong ultrafiltration membranes deliver an actual decay of just 7%–12%.

With 500,000+ annual shipments and sales across 13 countries, the quality and reputation of Chengrong ultrafiltration water filters speak for themselves.

As the top factory in the industry, Chengrong holds 3 invention patents, 8 software copyrights, 64 utility model patents, and 50 design patents. Few peers can compete with us.  

Chengrong Factory is the only manufacturer that meets all 3 requirements below：

1) Ranks among the TOP 3 in the industry, in terms of product quality, full supply chain capability, and management system.

2) The only fully integrated supply chain manufacturer covering R&D and production, molds and hardware, as well as complete water treatment equipment. Such capability is unmatched by our peers.

3) When comparing the quality of PVDF reinforced membranes and PVC alloy ultrafiltration membranes, we outperform our peers in 6 to 7 key parameters.  

To date, Chengrong holds 3 invention patents, 8 software copyrights, 64 utility model patents, and 50 design patents, Few peers in the industry can match. 

90% of our peers can only produce conventional products and lack independent R&D capabilities. 

At least 80% of the frontline technicians in Chengrong’s engineering workshop have over 6 years of experience, Chengrong Manufacturing demonstrates real expertise in the finest details. 

Never cut corners, never cheat, and never shift blame, even on invisible details, and this commitment can be written into the contract, our peers cannot imagine it, let alone achieve it.

Chengrong is the ODM/OEM manufacturer behind multiple world-leading brands, and has capture nearly 50% of the stainless steel Ultrafiltration Water Filters ODM/OEM market. We make our customers sleep with peace of mind, and earn an extra 10% profit.

With 19 years of experience and technological expertise in the Stainless Steel Ultrafiltration Water Filter industry, ChengrongEra under sink water filters rank among the top 1% in the industry for manufacturing quality, product performance, and structural design, a quality standard unmatched by our peers.

As a full-supply-chain factory in the ultrafiltration water filter industry, Chengrong factory develops and produces its own ultrafiltration membranes, with quality recognized by top-tier global brands, few competitors in the industry can rival us.

Chengrong ultrafiltration membrane cartridges in PVDF and PVC materials are SGS tested and fully compliant with NSF/ANSI 58-2023 standards — a quality standard most competitors cannot reach.

We use high-end raw materials for our ultrafiltration membranes that are rarely matched by other domestic manufacturers. Three key materials are directly imported, as no domestic alternatives can meet our standards yet.

Our formula has been continuously optimized and upgraded through numerous iterations, and we maintain consistent investment in R&D, a core advantage that our peers cannot replicate.

Chengrong ultrafiltration water filter cartridges adopt our proprietary technology of secondary spiral mixing of Type A & B adhesives plus constant-temperature bonding. No other manufacturer can compare.

The stainless steel housings of chengrongEra ultrafiltration water filters are in‑house manufactured with genuine 316L stainless steel. 

We apply 100% internal & external polishing and ultrasonic high‑temperature cleaning, to guarantee complete cleanliness and safety. These critical processes are either neglected or simply unavailable among our peers.

All purchased components, including screws, nuts, seals, displays, PLC control panels and electrical parts, are sourced from top domestic and international brands.

ChengrongEra ultrafiltration water filters, never compromise on quality and service, 10 years rust‑free, 10 years leak‑proof, 10 years of reliable after‑sales support. 20-minute response, 2-hour solution, Chengrong Ultrafiltration, customers have zero worry.

Katerian bought ChengrongEra mineral-water-like water purifier, to eliminate bottled mineral water from the supermarket, to save money and also drink healthy.

She is a customer who really knows water inside out. 

Before ChengrongEra water purifier, she had bought a RO water purifier for money saving and direct drinking. But just used for 3 months, she noticed a change in the flavor in her water, then she start to learn more knowleoge about the RO water purifer and the water.

The change of the water flavor is because the Bacteria in water exceed the standard limit. 

Due to the ultra-high filtration precision of the RO (Reverse Osmosis) membrane, it not only intercepts suspended particles, bacteria, and viruses in water, but also removes beneficial minerals and trace elements. As a result, the produced water contains almost no minerals or trace elements, leading to a significantly reduced Total Dissolved Solids (TDS) value. However, such water has an extremely bland taste that is not pleasant to drink. To improve the taste, an activated carbon filter is usually installed after the RO membrane to enhance the water's flavor profile. Furthermore, activated carbon is inherently prone to bacterial growth, which in turn leads to excessive bacteria in the purified water, causing the water to develop an unpleasant flavor. 

Katerian wanna have better healthier lifestly, but the RO water purifier would remove the beneficial minerals and trace elements, and with the risk of excessive bacteria. Thus, she wanna find a water purifier that can intercepts suspended particles, bacteria, viruses, and residual chlorine, but remain the minerals in water.

Then ChengrongEra water purifer comes to her eyes.

The main reason that Katerian decided to purchase ChengrongEra mineral-water-like water purifer is the word "mineral-water-like", and the Chengrong factory, she thought purchase from the factory could get more technical support.

After received the water purifier, everything is wonderful, the water taste very good, just like the mineral water in the supermarket.

Chengrong Ultrafiltration Factory, Focused on Stainless Steel Ultrafiltration Water Filters and membranes for 19 Years

ChengrongEra Brand

Unlike RO reverse osmosis water filters = Clean but Unhealthy.

ChengrongEra under-sink water filters = Clean and Healthy, unrivaled across the market,

Because of the chlorine-removing ultrafiltration membranes, chengrongEra proprietary technology, one and only worldwide. 

Unlike 99% of water filter brands caught in cutthroat price wars,

ChengrongEra exclusively serves the top 2% quality-oriented clients and shuns low-margin competition within the 98% low-cost market.

ChengrongEra adheres to one single positioning: we are resolutely focused on serving only the top 2% high-end customers, we rank among the industry's top 1% in manufacturing quality, functional performance and structural design.

ChengrongEra is not a mere water filter reseller, but a scientific, professional provider of customized household water filtration solutions. Rather than competing on low prices, we focus on the reliable filtration performance and user experience. That is why we cannot offer low-price, low-quality under-sink water filters — but we take 300% accountability for product quality and actual water filtration results.