{"id":626,"date":"2026-07-29T13:02:59","date_gmt":"2026-07-29T05:02:59","guid":{"rendered":"https:\/\/www.chengrongtimes.com\/?p=626"},"modified":"2026-07-29T14:22:21","modified_gmt":"2026-07-29T06:22:21","slug":"others-may-cost-less-but-chengrongtimes-is-the-only-full-house-water-filter-brand-confident-enough-to-offer-a-5-year-cartridge-warranty-to-ensure-long-term-reliablity-and-durablity","status":"publish","type":"post","link":"https:\/\/www.chengrongtimes.com\/?p=626","title":{"rendered":"Others May Cost Less, But ChengrongTimes Is the Only Full House Water Filter Brand Confident Enough to Offer a 5-Year Cartridge Warranty, to Ensure Long-term Reliablity and Durablity"},"content":{"rendered":"\n
\n

Yesterday, during our ChengrongTimes livestream, we received an unexpected comment.

The viewer said<\/strong> that after checking out countless ultrafiltration full house water filter brands and livestreams online, other brands might offer lower prices, but ChengrongTimes was the only one confident enough to offer a five-year warranty on its ultrafiltration filter cartridges<\/em>.

This viewer clearly knows how to spend wisely.

Making money takes intelligence, but spending it well often requires even better judgment. As the old saying goes, building something is difficult, but keeping it is even harder.

Many people in China purchase whole house water filtration systems<\/a><\/strong> to deal with turbid well water, yellow muddy water, or city water.

But their attention is always focused on one question: Can it be cheaper?<\/strong>

They rarely ask whether the whole house water filtration system is well made, whether it can reliably and durably solve my water turbid problems.

At that point, the purchase is no longer about finding the most effective full house water filter solution.

Therefore, ChengrongTimes chooses to do business only with customers who have high standards<\/strong> for full house water filter quality.

For a full house water filter, if product quality itself cannot be guaranteed, then no matter how impressive the marketing sounds, how low the price is, or how powerful the claimed features are, what value does it really offer customers if it cannot solve their actual water quality problems?<\/p>\n<\/div>\n\n\n\n

Why can ChengrongTimes offer a 5<\/strong>–year warranty on the filter cartridges, while most peers last only about 2 years or<\/strong> even less?<\/strong><\/h2>\n\n\n\n
\n

1) ChengrongTimes develops our own ultrafiltration membrane formulation and continuously refines the production technology, while most competitors lack in-house R&D capabilities<\/strong>.<\/h3>\n\n\n\n

ChengRong ultrafiltration factory invests several million RMB every year in membrane formulation R&D and the improvements of its manufacturing technology and processes.

Most peers make little or no such investment, because factory margins are already thin and every yuan spent on R&D comes directly out of profit.

ChengRong, however, refuses to compromise on product quality. When it comes to PVDF and PVC ultrafiltration membranes, ChengRong leads in at least 6~7 key technical parameters, with few comparable competitors in China.<\/p>\n<\/div>\n\n\n\n

\n
\"the
the ultrafiltration membrane production workshop of Chengrong ultrafiltration, which is used for the cartridge of full house water filters<\/figcaption><\/figure>\n\n\n\n

2) Every ultrafiltration membrane fibers, ABS housing, and end cap undergoes 100% inspection<\/strong>, no random sampling at ChengRong Factory<\/strong><\/h3>\n\n\n\n

To ensure the high quality of ChengrongTimes ultrafiltration membranes, we use premium raw materials that cost 2~3 times more than those commonly used by competitors<\/strong>.

Under the same operating conditions, our membranes deliver over 40% higher water flux than the industry average<\/strong>, with toughness and strength that few competitors can match.

What sets ChengRong apart even further is that we do not rely on random sampling\u2014every single filter cartridge undergoes 100% inspection.<\/strong><\/p>\n\n\n\n

\"ChengRong
ChengRong ultrafiltration cartridge quality inspection workshop, with 0.01 \u00b5m PVC ultrafiltration membranes undergoing 100% inspection<\/figcaption><\/figure>\n<\/div>\n\n\n\n
\n

3) Clean-Water Backwashing + Manual Washing: the most effective way to thoroughly address membrane fouling, only ChengrongTimes can provide<\/strong><\/h3>\n\n\n\n

For full house water filters with PVDF ultrafiltration membranes, the most effective way to thoroughly address membrane fouling is to combine filtered water backwashing with manual washing<\/strong>.

ChengrongTimes whole house water filter<\/a><\/strong> is able to provide both, while most competitors rely on manual washing alone.

Removing the cartridge for manual washing requires cartridge removal, and also the disassemble and reinstallation of the plumbing, which is inconvenient and unfriendly for most users and familes.

More importantly, manual washing alone can only remove contaminants from the surface of the membrane.

An PVDF ultrafiltration membrane does not filter at 5\u00b5m or even 1\u00b5m, but at 0.1\u00b5m<\/strong>, cleaning only the surface is therefore far from enough. Fine particles trapped inside the ultrafiltration membrane pores must also be removed; otherwise, continued fouling can significantly shorten the cartridge\u2019s service life.

This is one of the key reasons why many full house water filter peers with their ultrafiltration cartridges last only around 2 years\u2014or even less.

For full house water filters with PVDF ultrafiltration membranes, backwashing alone can actually be less effective than manual washing alone<\/strong>.

Worse still, many competing systems can only backwash with untreated feed water. This may introduce contaminants into the previously clean inner channels of the hollow fibers of the ultrafiltration membranes, causing secondary contamination and potentially making membrane fouling even worse.

Only by backwashing with clean water while applying manual cleaning force<\/strong> can the cartridge be thoroughly cleaned, helping extend its service life to more than five years<\/strong>.

This is also one of the key reasons ChengRong Times can confidently offer a five-year warranty on its filter cartridges<\/strong>.<\/p>\n\n\n\n

\"Actual<\/figure>
\n
\n

Actual Contaminant Filtration Performance to Water: <\/strong>

Full house water filter with 0.1\u00b5m PVDF ultrafiltration membrane cartridge<\/p>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n

\"Actual<\/figure>
\n
\n

Actual Backwashing Performance with Filtered Water<\/strong>:<\/p>\n\n\n\n

Although backwashing removes most of the sediment and other contaminants on the fibers.<\/p>\n\n\n\n

However, it can only slow down membrane fouling rather than solve the fouling problem completely.<\/strong><\/p>\n<\/div>\n<\/div><\/div>\n\n\n\n

\"backwashing<\/figure>
\n

Only by backwashing with clean water while applying manual cleaning force <\/strong>can the cartridge be thoroughly cleaned, offering a five-year warranty on its filter cartridges.

Only ChengrongTimes can provide.<\/p>\n<\/div><\/div>\n\n\n\n

\n

Frequently Asked Question About
Ultrafiltration Water Purifier Systems for Home<\/strong><\/h2>\n\n\n\n

Q:<\/strong>
Why can ChengRong Times offer a 5-year warranty on its ultrafiltration full house water filter cartridges?

A:<\/strong>
Because ChengrongTimes combines in-house membrane R&D, premium raw materials, continuous process optimization, 100% inspection, and a cleaning system that combines filter water backwashing with manual washing.

Together, these help reduce membrane fouling and extend cartridge service life beyond five years.<\/p>\n<\/div>\n\n\n\n

\n\n\n\n
\n

Ultrafiltration water filter made in Chengrong Factory, Built for Long-Term Reliability<\/strong>, Peace of Mind for Customers Worldwide<\/strong><\/p>\n\n\n\n

10-Year Rust-Free Guarantee<\/p>\n\n\n\n

10-Year Leak-Free Guarantee<\/p>\n\n\n\n

10 Years of After-Sales Support<\/p>\n\n\n\n

ChengrongTimes Whole House Water Filtration Systems, Never Compromise on Quality and Service<\/strong><\/p>\n<\/div>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

Yesterday, during our ChengrongTimes livestream, we received an unexpected comment. The viewer said that after checking out countless ultrafiltration full house water filter brands and livestreams online, other brands might offer lower prices, but ChengrongTimes was the only one confident enough to offer a five-year warranty on its ultrafiltration filter cartridges. This viewer clearly knows […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-626","post","type-post","status-publish","format-standard","hentry","category-factory-diary"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t