Owing to ... therefore ... with 由于…因此 — Chinese grammar (HSK 4)

由于 + Cause，因此 + Result

由于 (yóuyú, owing to) and 因此 (yīncǐ, therefore) are the formal written partners of 因为…所以. They are typical of news, reports and essays. 由于 can also be followed by just a noun phrase, and either half can be used on its own.

Examples

由于天气不好，因此飞机推迟了。 Yóuyú tiānqì bù hǎo, yīncǐ fēijī tuīchí le.	Owing to bad weather, the flight was delayed.
由于他经验丰富，因此公司很重视他。 Yóuyú tā jīngyàn fēngfù, yīncǐ gōngsī hěn zhòngshì tā.	Because he is very experienced, the company values him highly.
由于交通方便，这个城市发展得很快。 Yóuyú jiāotōng fāngbiàn, zhè ge chéngshì fāzhǎn de hěn kuài.	Thanks to convenient transport, this city has developed quickly.

Tip: In casual speech 由于…因此 sounds stiff; save it for writing and formal talk.