Factory & Quality Control
Manufacturing is positioned within the Qinghe filter industry cluster of Hebei province. Factory area, staffing and production equipment for this entity are marked provisional until independently verified with on-site evidence.
Production capability (industry reference)
Filter manufacturing in this cluster typically spans several dedicated lines — air-filter assembly, HEPA mini-pleat and separator pleating, filter-media production, and cleanroom equipment assembly. The following capability descriptions are drawn from the industry cluster reference corpus and are not presented as this entity's verified equipment list:
| Line | Description |
|---|---|
| Filter media lines | Needle-punched and synthetic-fibre media production with lamination. |
| HEPA pleating | Separator and mini-pleat lines using micro-glass media (pleat depths 20–100 mm). |
| Frame forming | Galvanised and stainless frame welding and forming. |
| Quality testing | Efficiency, leakage and pressure-drop test equipment. |
Quality control
Quality control follows a label discipline: every specification field carries a
data-status label (verified / catalog-confirmed / reference / pending). HEPA elements are leak-tested before dispatch where a factory
leakage-test certificate is specified. The test-standards reference
documents the efficiency classifications applied across the range.
Certifications
Certifications are not presented until independently verified with certificate numbers. Any certification claim seen in third-party catalogues is not attributed to this entity.