C&F (COST & FREIGHT) includes all shipping costs but insurance. Generally used in statement of terms, stating cost and freight are paid by the exporter from his warehouse to a port in the importers country. In this case, the buyer is responsible for insurance.
CONTROLLABLE MARGIN technically is the excess of contribution margin over controllable fixed costs. Managerially it is that margin that you can reasonably expect from a process that is balanced and controlled. Controllable margin is considered to be the best measure of a managers performance in efforts to control revenues and costs.
REFINANCE is to to renew or reorganize the financing of an asset, e.g. obtaining a new mortgage loan on a property already owned. Often to replace existing loans on the property.
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