Tā wèi liǎng jiā gōngsī qiānxiàn-dāqiáo, cùchéng le zhècì hézuò.
He acted as a go-between for the two companies, facilitating this partnership.
Tips
memory
牵线 = to pull strings (like a puppeteer), 搭桥 = to build a bridge → to pull strings and build bridges between parties, i.e. to make connections happen.
usage
牵线搭桥 is used for both matchmaking (introducing romantic partners) and business/professional networking. It always implies a helpful, active intermediary role.
