Work permits, marriage registration, company matters and consular paperwork all demand certified translations of Sri Lankan documents — and you can get sworn, Ministry-of-Justice-valid translations entirely from China.
Sworn translators are registered with the Ministry of Justice of Sri Lanka (my registration: 2020/CE/CL/042, Chinese–English) — the certification standard used for official submissions in Sri Lanka and the form your documents' receiving authorities can verify against a government register. A translation done informally in China for a Sri Lankan authority, or vice versa, risks rejection precisely when the deadline is tightest.
WhatsApp or email a clear photo or scan. You will receive a fixed price and delivery date — usually within a few hours. Certified hard copies are couriered island-wide; PDF copies can be sent worldwide, including to China.