The Australian government on Thursday banned Chinese telecommunications firm Huawei from supplying equipment for a 5G mobile network.
Australia is forced to shelve for at least two months its plans to cut company taxes.
Chinese smartphone and telecommunications equipment maker Huawei wrote an open letter to Australian lawmakers on Monday.
Bilateral relations between Cambodia and Australia are longstanding and mutually beneficial. And so is the relationship between Australia and Asean.
Demonstrators will travel by bus from Melbourne to Canberra city tonight.