1, Core technology of precision filter bottle: 5-micron PP cotton filter medium
As an important equipment in modern water treatment technology, the core of precision filter bottles lies in the selection and design of filter media. 5-micron PP cotton (polypropylene fiber cotton) is an ideal material for filtering particulate matter, floating particles, and fine particles in water due to its unique physical and chemical properties.
The physical structure of PP cotton
PP cotton is made by melt spraying process, with fine fiber diameter and three-dimensional network distribution, forming a multi-layer gradient filtration structure. A 5-micron aperture design can effectively intercept impurities with a diameter greater than 5 microns (such as sediment, rust, colloids, etc.), while allowing water molecules and small mineral particles to pass through, balancing filtration accuracy and water flow rate.
Chemical stability and safety
Polypropylene, as a food grade material, is acid and alkali resistant, non-toxic, and will not release harmful substances after long-term use. Its hydrophobic characteristics can also inhibit bacterial growth and avoid secondary pollution.
Multi layer composite filtration mechanism
Precision filter bottles usually adopt a multi-layer PP cotton structure with "outer sparse and inner dense": the outer fibers are loose, intercepting large particles; The inner fibers are tightly packed, adsorbing fine suspended solids. This design significantly extends the lifespan of the filter element and reduces the risk of clogging.

The precision filter bottle features a 5-micron PP cotton filter media, noted for its precise pore size that evenly traps impurities, efficiently cleaning water of particulates, floating debris, and fine particles, all while maintaining an economical price point.
Detailed Photos
PP cotton adapted water purification equipment
Company Profile
Originating in 2008, VLLRO has grown exponentially into a vast integrated enterprise, integrating research, production, marketing, and customer support. Possessing a comprehensive set of licenses for hygienic and safe drinking water manufacturing, the company has achieved multiple practical invention patents and earned the trust of over 30,000 clients. Notably, VLLRO has become the go-to brand for constructing water purification systems in numerous Chinese embassies stationed in Africa, while its products have traversed the globe, reaching over 100 countries and regions, underscoring its international reach.
