How do you pronounce 單證?

Q: How do you pronounce 單證? A: daan1 zing3, e.g.

單證 (daan1 zing3) — meaning, pronunciation, examples

單證 (daan1 zing3, dān zhèng) — (international trade) documentation (e.g. a bill of lading)

單丁 (daan1 ding1) — one person; one who is alone
單人房 (daan1 jan4 fong2) — single room (hotel)
單企人 (daan1 kei5 jan4) — Chinese radical, which represents human, a single person side-radical
單位 (daan1 wai2) — (noun) apartment
單係 (daan1 hai6) — only (spoken)
單利 (daan1 lei6) — simple interest