Employment Certificate with compensation rate per month at least 2500 USD monthly.
No age restriction.
Certificate of Single issued from the residing State.
Police Clearance that he/she has no criminal background.
Need to coordinate to Australian Embassy in Phnom Penh for more documentation.
For more information, please visit Ministry of Foriegn Affair and International Cooperation website at https://www.mfaic.gov.kh/procedure-for-foreign-marriage.