| Water problem | Media ZHONGHE uses and what it does |
|---|---|
| Free chlorine | Activated carbon fiber (99.5% removal at start of flow, SGS, GB/T 5750.11-2023; 90.6% after 5 tons in separate tests) and calcium sulfite ceramic balls |
| Hot-water showers | Calcium sulfite balls, which keep working in hot water where some media lose effect |
| Rust, sand, scale particles | PP cotton pre-filter stage that traps particles and visibly discolors |
| Hard water (calcium, magnesium) | Not softened by a shower filter; PP cotton keeps scale particles off the face plate and metasilicate media conditions water (reference pH 8.1) |
| Odor and taste | ACF stage |
| Claims | Water conditioning and tested chlorine reduction only; no health, skin, or softening promises |
| Sourcing | MOQ from about 2,000 units; 100% water test; refill cartridges as separate SKUs |
Chlorine: what the numbers say
Chlorine reduction is the one shower-filter claim that can be measured cleanly, and ZHONGHE's activated carbon fiber has the reports. SGS testing to GB/T 5750.11-2023 showed 99.5% free-chlorine removal at the start of flow; separate third-party tests showed over 96.8% initially and 90.6% after 5 tons of continuous flow. Calcium sulfite ceramic balls also react with free chlorine and keep doing so in hot water, which matters because most showers run warm.
Every listing should carry two caveats: the media is a consumable that declines with use, and results vary with local water quality, temperature and flow. The factory supplies the reports so the caveats sit next to verified figures.
Hard water: what a shower filter can and cannot do
Hardness is dissolved calcium and magnesium. Removing it requires ion exchange or reverse osmosis, neither of which fits inside a shower handle at useful flow rates. A shower head filter helps with the symptoms of hard water instead: a PP cotton stage traps scale flakes and rust so the spray face stays clear, and metasilicate mineral media conditions the water toward mildly alkaline. ZHONGHE describes these products as water-conditioning shower heads and does not claim they soften water.
Buyers selling into hard-water regions usually pair a PP cotton stage with calcium sulfite or mineral beads, print a realistic replacement interval, and plan a refill SKU.
Choosing the model and media for your market
Describe the water in your market and the claim you want to print, and ZHONGHE recommends a media stack and a handle family. Chlorinated city water points to ACF or ACF plus calcium sulfite; old pipework points to PP cotton first; shelf appeal points to a transparent bead handle. Then fix the head style, colors, thread standard, and packaging, and confirm which test reports travel with the order.
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