Newsflash. The owners of these factories, or the conglomerates that employ the factories, are either Western or schooled in the Western tradition. The fact that we reject child labor, even if we are to assume that these people don't know any better, it's because we in the West are applying our own standards to the practices over there.
Who is "we"? Are you 100,000 years old by any chance? You don't know anything about the ethical standards of earliest individuals in the human species. Once again you are making assumptions you can't back up.
-wikipedia
Are you saying that if this owner came from the east he would not realize it was morally wrong to use child labour? Bullshit. Morality is universal, it does not matter if you were raised in Ireland, Cameroon, South Africa, America, Cambodia, or South Korea, you will inherently posess a sense of morality.
No, but here is a statement that proves my point. "If a man will go into a library and spend a few days with the Encylopedia of Religion and Ethics, he will soon discover the massive unanimity of the practical reason in man. From the babylonian hymn to Samos, from the laws of Manu, the Book of the Dead, the Analects, the Stoics, the Platonists, from Australian aborgines and Redskins, he will collect the same trimuphantly monotonous denunciations of oppresion, murder, treachery, and falsehood, the same injuctures of kindness to aged, the young, and the weak, of almsgiving and impartiality and honesty". C. S. Lewis.