しゅようのうにゅうさき
Meanings
Noun
1. key customers; key customer; major clients; major client
Kanji used
(one's) master
needed
to supply
enter
before (timewise)
Composed of
① 物事の中心となっていて大切なこと。
① 金品を納め入れること。
point; tip; head (of a line); front; first; before; (the way) ahead