In the future, if we go to a private business. We need to distinguish between the various market knowledge that there are many vendors who market. The State of the race, however, as the power to set prices or sales quantity is much. To calculate the cost to set the sales price or expanded based on the marginal cost and marginal revenue, where all these ideas make it a basic idea marketers to plan, and decided to start doing everything in order to succeed in business.
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