noun which may take the genitive case particle 'no'
company-established; corporate
Used attributively with の to describe something founded, set up, or run by a company, such as a school, hospital, or training program.
この病院は会社立の施設です。
This hospital is a company-established facility.
会社立の研修センターで研修を受けた。
I received training at a corporate training center.
公立 means 'publicly established' by a government body, contrasting with 会社立 which is corporate.
Compound of 会社 (company) and 立 (establishment). The reading りつ for 立 follows the pattern of other establishment terms like 私立 (しりつ) and 公立 (こうりつ).