An after-sales question rarely arrives as a complete case. A buyer may have a product photo, a market and a short description, but not the selected sample, accessory allocation or approved wording. The first response should not guess from a product family. It should rebuild a small, privacy-conscious record chain for the exact configuration in question.

Hand holding the YH-3100 beside blank record cards and a kraft carton

This product-record scene places a trimmer beside blank cards and a carton. The selected product record and project documentation determine the configuration under review.

Start the case with a configuration card

Create one card for the incoming question before searching for a cause or a replacement. It needs only the buyer's permitted reference, the product model, the market, the version or sample reference if available, the reported issue in the buyer's own words, and the date the case was opened. Keep personal contact details and any customer-controlled identifiers in the project system rather than in a public article or a shared product image.

The public YH-3100 nose hair trimmer record is a useful example of why identity matters. It lists YH-3100, IPX5, a 3.7 V 320 mAh battery, 5 V=1 A input, a 0.75 m Type-C cable and a cleaning brush. Those fields help identify the recorded configuration; they do not identify a particular production batch, prove a case outcome, establish part compatibility or promise a replacement.

Hand the same reference through four records

A traceable case does not require publishing internal labels. It requires the people handling the case to carry the same reference through four private records: the selected configuration, the production or release reference where one is authorised to be consulted, the shipment or market handoff, and the after-sales case. If a link is missing, mark it missing. Do not fill it with an assumption from a visually similar device.

Record handoffMinimum question it should answerKeep separate until confirmed
Selected configurationWhich model, revision or approved sample is the question about?Similar housings, heads, cables and accessories
Controlled production or release record