公安局 (gōng ān jú): Public Security Bureau (PSB) (Noun) — Meaning & Stroke Order

In order to apply for a residence permit, he must personally go to the Public Security Bureau to submit the documents.

Are you sure the stamp on this document needs to be authenticated by the Public Security Bureau?

I went to the public security bureau to apply for an ID card.

The police at the public security bureau helped me find my lost wallet.