Hier die Produktbeschreibungen (aktuell seeehr allgemein):
Nittaku So-Ten is an inner type of blade with KVC3 carbon fibers placed on the core ply. Inner type blades have the carbon ply under two layers of wood, while outer type blades have the carbon ply under one layer. This construction provides the incredible sense of touch and spin due to KVC3 carbon elastic properties. Made in Japan.
Hier sind die Infos aus Asien:
https://www.nittaku.com/products/rackets/post-159
Nittaku Gyo-En is an outer type of blade with KVC3 carbon fibers placed directly under hard wood outer plies. Outer type blades have the carbon ply under one layer of wood, while inner type blades have the carbon ply under two layers. This construction ensures it is lightweight but offers a lot of speed and power due KVC3 carbon properties. Made in Japan.
Hier sind die Infos aus Asien:
https://www.nittaku.com/products/rackets/post-158