JP: 宮内庁御用達/くないちょうごようたつ

Also named Kunaicho goyotashi, meaning companies that are purveyors to the Imperial Palace. In the case of Arita ware, Koransha and Fukagawa seiji are assigned The Royal Warrant.

FukagawaseijiKoranshaKunaichogoyotashiKunaichogoyotatsu