Guides
Japan’s product rules, in plain English.
- Japan's Domestic Administrator rule for overseas sellers (since 25 Dec 2025), explained
Who must appoint a Domestic Administrator (国内管理人) in Japan, what the five contractual duties are, what METI publishes, and the three ways to satisfy the rule.
2026-09-15
- PSE for AC adapters: why the charger in your box is usually the expensive part
Round vs diamond PSE, why a bundled AC adapter is a specified (diamond) item, and the shortcut most brands use.
2026-09-15
- "Our Wi-Fi module is already certified": what module Giteki does and does not cover
How construction design certification follows the antenna and firmware, when a final product inherits a module's certification, and how to check in the MIC database.
2026-09-15
- Shipping to Amazon FBA Japan from overseas: the customs representative (ACP) you need first
Why Amazon is not your importer of record, what an Attorney for Customs Procedures (税関事務管理人) does, who pays duties and consumption tax, and how it fits with the Domestic Administrator rule.
2026-09-15
- Amazon.co.jp asked for PSE documents: what they actually want, and what to send
The four things Amazon.co.jp typically requests for electrical products, how to read the notice, and how the December 2025 rule changes the answer for overseas sellers.
2026-09-15
- 海外製品を Makuake に出す前に確認する3つのこと：技適・PSE・国内管理人（代理店・輸入商社向け）
海外メーカーの製品を日本のクラウドファンディングやECに持ち込む代理店が、案件ごとに確認すべき技適の登録状況、PSEの品目、国内管理人・税関事務管理人の要否を、一次資料へのリンク付きで整理します。
2026-09-15
- Free template: how to answer an Amazon.co.jp PSE / Giteki document request (copy and adapt)
A ready-to-send English reply for the four things Amazon.co.jp asks overseas electronics sellers for, with the Japanese terms Seller Support uses and what to attach in each case.
2026-09-16
- Amazon.co.jp asked for a Domestic Administrator (国内管理人): what it means and your three options
If Seller Support asked for your Domestic Administrator, Amazon is treating you as an overseas seller who may fall under Japan's amended product-safety laws. Here is what the notice means, the deadline logic, and the three ways to satisfy it — including early access to our own service.
2026-09-16
- How to choose a Domestic Administrator provider in Japan: a 10-point checklist
Ten questions to ask any Domestic Administrator (国内管理人) or customs ACP provider before signing — liability, documents, unreachability, insurance, language, and price.
2026-09-16