Remanufacturing decisions for dedicated part remanufacturers with limited demand distribution information (i.e., the first moment and second moment) under three carbon emission policies (carbon limitation, carbon tax and carbon trade policies) are studied in this paper. First, a basic model, which includes sales revenue, remanufacturing cost, disposal cost, inventory holding cost and shortage cost, but not carbon emission cost, is presented; Second, three different models considering carbon emission costs under three different carbon emission policies are derived; Third, these models are solved by converting them into REVD(relative expected value distribution) models, in which the optimal remanufacturing quantity which maximizes the minimum total profit is obtained by minimizing the relative regret value under the distribution set with the same first and second moment; Finally, the effects on the decisions of remanufacturing and the total profit of the carbon emission policy or the penalty degree are analyzed by an numerical example. These results can help dedicated part remanufacturers and policy makers to make reasonable decisions.