According to Japan's "Electrical Product Safety Law" PSE certification is divided into two categories.

PSE diamond certification: Among them, it is easy to cause electric shock, fire and other accidents, and there are 165 kinds of products with greater danger, which are classified as "specific electrical products — called Class A electrical products", such as chargers and adapters;

PSE circular certification: the remaining 341 products with less harmfulness are classified as "non-specific electrical products-called Class B electrical products", most of which are large and small household electrical appliances, lighting products, lithium batteries, etc.