# Shower Head Quality Control

Source: https://www.ningboware.com/quality-control/
Publisher: Cixi Zhonghe Sanitary Appliance Factory (ZHONGHE), Cixi, Ningbo, Zhejiang, China. Contact: steven@ningboware.com
Updated: 2026-09-05

B2B shower head buyers need more than product photos. ZHONGHE explains the checks used around parts, assembly, water testing, leakage, flow, and packaging.

## What quality checks are performed before shipment

ZHONGHE can review incoming parts, finished-product water testing, leakage checks, O-ring inspection, flow testing for selected water-saving specifications, packaging checks, and shipment preparation before goods leave the factory.

## Inspection steps

| Inspection step | What buyers can ask |
| --- | --- |
| Incoming parts | Visual and dimensional review of key parts and supplied components. |
| Full water test | Finished shower heads are checked with water before packing. |
| Leakage check | Factory leakage checks can include 0.5MPa pressure testing for selected processes. |
| O-ring inspection | O-ring supply and inspection can include visual checks from the supplier side. |
| Flow test | Flow can be tested under 0.3MPa factory conditions for selected water-saving specifications. |
| Packing check | Packaging, labels, quantity, and carton condition are reviewed before shipment. |

## Flow and leakage

For selected specifications, flow can be tested under factory conditions at 0.3MPa. Selected water-saving designs may reduce flow by about 50%-70% compared with non-water-saving types, but results vary by product and use conditions. Factory leakage checks can include 0.5MPa pressure testing for selected processes.

## FAQ

### What does ZHONGHE manufacture?

ZHONGHE manufactures and supplies hand shower products including filter shower heads, multifunctional shower heads, baby shower heads, pet shower heads, hair shower heads, LED shower heads, shower hoses, holders, filters, and related bathroom accessories.

### Does ZHONGHE support OEM and ODM projects?

Yes. Buyers can use existing models for OEM private label programs or discuss ODM projects involving appearance design, internal structure design, 3D sampling, mold making, and production planning.

### What is the typical MOQ?

MOQ ranges from 500 to 2,000 units depending on the model, finish and packaging: existing catalog models in a standard finish and standard packaging can start from about 500 units; a logo print or a color change typically from about 1,000 units; custom packaging, custom colors or new cartridge configurations from about 2,000 units. The final figure also depends on material, finish, and whether new development or mold work is required.

### What quality checks are used before shipment?

Quality work can include incoming part checks, full water testing, leakage checks, O-ring inspection, flow testing for selected water-saving specifications, packaging checks, and final shipment review.

### What should buyers send for an RFQ?

Useful RFQ details include product category, target market, estimated order quantity, benchmark photos or drawings, packaging needs, logo requirements, flow or finish requirements, and delivery timeline.

## Related pages

- OEM/ODM route: https://www.ningboware.com/oem-odm/
- Design and manufacturing: https://www.ningboware.com/design-manufacturing/
- Quality control checklist: https://www.ningboware.com/resources/shower-head-quality-control-guide/
- Inspection and AQL guide: https://www.ningboware.com/resources/shower-head-inspection-aql-and-reports/
- Send an RFQ: https://www.ningboware.com/contact/