A supplier audit answers one question: can the business you are contracting with actually produce the neck massager you sampled, at your quantity, with documents that cover it? Because neck massagers sit against the skin and often include heating elements and rechargeable batteries, the audit should pay particular attention to skin-contact materials, electrical safety testing and the mapping between certificates and the exact model you ordered.
Use this checklist to organize company information alongside product documents, so the contracting business, factory and product can be identified clearly.
Company and business identity
| Check | Questions to ask | Documents to request |
|---|---|---|
| Contracting entity | Is the seller the manufacturer, or a trading company acting for a factory? | Business license; factory address matching the license |
| Manufacturing role | Which processes are in-house, which are outsourced? | Production flow description; outsourced-process list |
| Export experience | Which markets has this product category shipped to? | Export record or references for massage devices |
| Responsibility | Who signs the specification and handles claims? | Named contact with authority over quality decisions |
Product documents mapped to the exact model
A document covering a different massager is not sufficient evidence for your model. For each document, check the model list, date and test scope, then ask how the supplied version maps to the record.
- Electrical safety and EMC documents covering rechargeable and heated models specifically — batteries and heating elements raise the testing bar.
- Certificate documents for the exact model and configuration you intend to order, including any variants (plug type, adapter).
- Battery transport documents for models with lithium batteries (WY-Z10A, WY-064315 and other rechargeable units).
- Material records for skin-contact fabrics — the inner cover touches the neck for the whole session, so material declarations matter here more than in handheld categories.
Production and process controls
- Assembly lines for this product type: Confirm the neck massager lines are the ones you will see, with the model you sampled.
- Incoming material control: How are fabrics, PU or ABS parts, batteries and motors checked on arrival?
- In-process checks: Where are semi-finished units tested — before assembly of the housing, after electrical assembly, at final test?
- Final inspection: What is the sampling plan per batch, and what happens to failed units?
- Heating and battery test stations: For heated and rechargeable models, ask for evidence that each batch is tested for these functions specifically.
Questions that expose specification drift
1. Show me the sample you would ship against my approved sample — is it from current production?
2. Which document covers this exact configuration, including the adapter for my market?
3. If I change the manual or packaging, which parts of the certificate file remain applicable?
4. What is your process when a batch fails the final inspection?
5. Who owns the tooling for this model, and what happens on re-orders after two years?
After the audit
Record findings against this checklist, separate observations that block the order from those that only need monitoring, and agree corrective actions with dates. Keep the audit record with the approved sample and specification — the three documents together define what "the same product" means on re-orders.
Common audit questions
Can I audit before the first order?
Yes — audits are most valuable before contracting. Ask for the document set first, then decide whether an on-site or third-party visit is needed.
What if certificates cover a family of models?
Check that your exact model and configuration appear on the scope. If only the family is listed, ask for a document that names your model.
Do dual-power models need extra attention?
Yes — models with both plug-in and battery operation should show test evidence for both power modes.
Start your supplier review with Relanovo
Request the document set for the neck massager model you intend to order, together with a sample and quotation. We support buyer audits with factory information and model-matched documentation.