Three markets, three schemes, one question
A buyer planning a listing in Japan, Korea and China is dealing with three separate market-access systems, each with its own authority, its own conformity route and its own paperwork. They are frequently discussed together because the three markets sit in one regional plan, and that habit causes errors: an approval that opens one market does not open another, and a file set assembled for one authority is not a substitute for the others.
The question this article can answer is narrow and practical: what schemes exist, what a supplier is normally asked to produce, and where the buyer's own obligations usually sit. The question it cannot answer is whether a specific rechargeable hand warmer, with a specific pack and a specific adapter, needs any of them. That answer belongs to a local laboratory or a regulatory consultant who can see the product and the classification rules together.
What exists in each market
Japan operates a product safety scheme for designated electrical products, with a conformity route that involves a registered conformity assessment body for the categories that require one. Korea operates a national certification and registration system for electrical products, with a safety confirmation route for categories that fall under it. China operates a compulsory certification system for products in its catalogue, administered through designated certification bodies and testing laboratories.
For a hand warmer, the classification question is rarely about the heating element alone. These products sit at the intersection of a small battery pack, a charging circuit, a heating element and, in some configurations, a mains adapter supplied in the box. Which of those elements brings the product into a scheme, and whether the pack alone or the complete unit is the object of assessment, is exactly the kind of question a local body answers quickly and a buyer cannot answer from a brochure.
Scheme existence at a glance
| Market | Scheme in force | Who normally holds the approval | Documents to request from a supplier |
|---|---|---|---|
| Japan | Electrical product safety scheme with a conformity route | The manufacturer or the importer named on the file | Conformity document, test report, factory registration evidence |
| Korea | National electrical product certification or registration | The applicant named on the certificate, often the importer | Certificate or registration, test report, importer details |
| China | Compulsory product certification for listed categories | The certificate holder, usually the domestic entity | Certificate, test report, factory inspection record |
The document types you will be asked for
In all three markets, the same four families of document tend to appear. The first is a test report from a laboratory recognised by the relevant authority, covering the product as configured for that market. The second is the certificate, registration or conformity document itself, naming the holder and the product model. The third is evidence about the factory, which can range from a registration record to an inspection report depending on the route. The fourth is a declaration or application form that ties the model designation on the certificate to the model designation on the carton.
The fourth is where shipments fail. A certificate can be entirely genuine and still not cover the model in the box, because the commercial model name differs from the certified designation, or because the pack was changed to a different cell and the certificate was never updated. Ask for the certificate's model list and compare it with the packaging artwork, character by character.
Where the scheme attaches
The physical question is which object is being assessed. For a warmer sold with a separate mains adapter, the adapter is often the component that brings a mains-voltage scheme into play, while the warmer itself may follow a different route. For a warmer charged only from a USB port, there is no mains adapter in the box, which changes the analysis and sometimes the conclusion.
Inside the device, the parts that matter to an assessor are the charging circuit on the control board, the heating element and its insulation, the NTC thermistor bonded to the element, the adhesive that holds it in place, the OTP protector and the battery compartment construction. A supplier who has already been through one of these schemes for a similar product can usually produce a test report quickly; a supplier who has never filed one will need a lead time that has to be planned into the launch date, and the difference shows up in how each candidate answers the questions below. The three quote comparison worksheet keeps those answers side by side while the decision is still open.
Scheme existence ≠ applicability
The boundary worth stating plainly: the existence of a scheme does not mean the scheme applies to your product, and the absence of a certificate in a supplier's folder does not mean the product is unregulated. Applicability depends on the product category definitions, on the configuration shipped, and on the role of the importer. Those are legal and technical determinations, and the honest answer from a supplier should be a referral to a laboratory or consultant in that market rather than a confident yes.
The second boundary is that a certificate is not a safety statement about the whole product. It records that a defined sample passed a defined set of tests under a defined route. It does not cover a substituted cell, a revised control board, or a different element supplier. Whenever any of those changes, the certificate should be checked before the next shipment leaves.
Five questions for the supplier
- Which market schemes has this exact model been filed under, and can you send the certificate or registration with its model list? The model list is the part that matters, not the cover page.
- Who is the holder named on each document, and does that holder match the entity shipping to us? A holder that is neither the factory nor your importer creates a paper trail problem.
- Which laboratory issued the test report, and is that laboratory recognised for the relevant market? Recognition is market-specific and cannot be assumed.
- Was the assessment performed on the warmer alone, on the warmer with its adapter, or on the pack separately? The object of assessment determines what the document actually covers.
- What changes would require a new filing, and how will you notify us before shipment if any of them occur? Ask for this as a written change-control clause.
Next step
Build one line per market in your compliance matrix, record the holder, the model list and the report reference, and route the applicability question to a laboratory in each market before the purchase order is placed. The certification document matrix by market is the place to keep those lines, and certification wall reality check explains why a folder of scans is not the same as coverage. For a per-market file review, start at contact.
Written for the Emberly heating-element programme. Specifications are illustrative; confirm every figure against a supplier test record.