In recent years, many companies have been creating service-added competitive strategies to their product offerings. What is the main benefit of this approach?

1 It provides customers with access to call centres and chat functionality.

2 It provides companies with another way to up-sell extended warranties.

3 It is especially useful for exporters selling in developing countries where infrastructure requirements may not be adequate to support product sales.

4 It allows companies to provide greater value and product differentiation.

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