Chengrong Factory was established on May 6, 2008. It’s one of the last few factories that cover the whole supply chain for ultrafiltration membranes and UF water purifiers. Basically, it’s the benchmark all global peers in the UF industry look up to. 

We put R&D first, update products nonstop, and always have customers’ backs. Out of nearly 4,000 industry peers in China, fewer than 10 have got the "National High-Tech Enterprise" title, but Chengrong factory is one of them. 

Four unique product lines: 

1. Kitchen under-sink water purifiers that could preserve the mineral and trace elements in water ;

2. Water filtration system for the whole house (mounted on the home main water inlet pipe) ;

3. Commercial-use mineral-retaining water filtration system; 

4. Full sets of water purification equipment for water treatment plants. 

We do 3 to 4 tech upgrades or updates every year, so our UF quality is way ahead of peers.

Over the past nearly 20 years, Mr. Zhuang Beikan (庄贝刊) has run the factory with the core value of "Integrity as Pride." His goal is to ensure the factory's customers sleep soundly, help them increase their market profits by 10%, truly turning the concept of "zero customer worries" into reality.

From its early days, when Chengrong Factory focused on manufacturing hardware parts, processing stainless steel casings for UF water purifiers, and providing ODM/OEM services for complete UF water purifiers, all staff have adhered to the ISO 9001 international quality certification system, with an annual investment of over 360K RMB into quality checks. Later, the factory established its own ultrafiltration membrane production facility, and further expanded into the engineering sector, covering commercial water supply equipment and equipment for urban water treatment plants. Starting as a small workshop with only 10 employees, it has grown into a full-supply-chain factory with 280 staff, a feat rarely matched by any other factory in the industry.

In 2025, Chengrong Ultrafiltration Factory launched its own brand--Chengrong Era, targeting the top 2% high-end market. In terms of quality and functionality, it has already become a benchmark that ultrafiltration industry peers worldwide are looking to match. 

Shenzhen Chengrong Factory is no ordinary manufacturer

- Top 3 factory in the stainless steel pipeline ultrafiltration water filter/purifier sector 

- The only full-chain ulfiltration manufacturer of its kind in the industry 

- Trusted ODM/OEM partner to multiple world-leading brands

ChengrongEra FOUR differentiated product series

Welcome global peers to benchmark against Chengrong Ultrafiltration Water Filters/purifiers

SGS Authoritative Testing | Complies with NSF/RoHS Standards | Most Peers Won't Do It

Ultrafiltration Membrane Filter Cartridges From Chengrong Factory, SGS Test Report Results 

1）Report issued on November 28, 2025: 

Chengrong PVDF ultrafiltration membrane complies with NSF/ANSI 58-2023 standards (per SGS testing)

2）Report issued on September 26, 2025: 

Chengrong PVC ultrafiltration membrane complies with NSF/ANSI 58-2023 standards (per SGS testing)

3）Report issued on September 28, 2025:

 Chengrong PVC ultrafiltration membrane complies with NSF/ANSI 42-2023 standards (per SGS testing)  

Chengrong Ultrafiltration Water Purifier (Complete Unit), SGS Test Report Results

1) Report issued on October 25, 2023: 

Chengrong Ultrafiltration Water filter (complete unit: staniless steel housing + filter cartridge) complies with EU RoHS environmental requirements, per SGS testing.

2) Report issued on October 15, 2024: 

Chengrong Ultrafiltration Water filter (complete unit: staniless steel housing + filter cartridge) complies with EU RoHS environmental requirements, per SGS testing.

3) Report issued on October 22, 2025: 

Chengrong Ultrafiltration Water filter (complete unit: staniless steel housing + filter cartridge) complies with EU RoHS environmental requirements, per SGS testing.