Foreign investment is limited to 49% in other publishing activities, i.e. micropublishing activities, reproduction of postcards, posters, greeting cards, photos, reproduction of works of art etc. In addition, total foreign ownership of Khmer language newspapers is limited to 20%.
"Article 1: The following investment sectors shall be restricted on the basis of national security, social welfare, or economic needs as listed in the sensitive list for the opening of industries and for the granting of national treatment in the attached annex.
Annex 1 
[...] IV. Manufacturing Related Services: Other publishing: foreign equity is restricted to maximum of 49%" (Sub-decree 80/ANK/BK on Measures Restricting Certain Investment Sectors, 27 August 1999, Art. 1 and Annex 1)
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"Article 18: The total number of all Khmer language newspapers owned/possessed by foreigners shall not exceed 20 percent of the total of all Khmer language newspapers that are actually being published in the Kingdom of Cambodia. Once the newspapers owned/possessed by foreigners have been authorized to publish, may not be closed because of the decreasing of total number of Khmer language newspapers."(Law on the Regime of the Press, 1995, Art. 18)
Sub-decree 80/ANK/BK on Measures Restricting Certain Investment Sectors, 27 August 1999, Art. 1 and Annex 1.
Law on the Regime of the Press, 1995, Art. 18
[<a href="https://www.wto.org/english/thewto_e/acc_e/khm_e/wtacckhm3a3_leg_4.pdf">Sub-decree</a>],[<a href="https://www.google.fr/search?q=law+on+the+press+cambodia&oq=law+on+the+press+cambodia&aqs=chrome..69i57j0l5.5359j0j4&sourceid=chrome&ie=UTF-8">Law</a>]