As another example, it may be noted that Arroyo compared the use of 3PLs in Mexico versus similar practices across the US and Europe thereby offering a cross-cultural view on 3PLs across different regions. Also, there is interest in integrating with 3PL operations in the reverse supply chains over and above the forward supply chain. Processing returns of goods, as well as packaging supplies such as pallets to be re-used in a closed supply chain, has gained a lot of recent interest. Moreover, the type of activity for which integration was sought from the 3PLs could be of interest. For instance, found important differences in integration experiences of firms with 3PLs that depended on whether the activity was air and sea transport, freight forwarding, or 3PL services. This shows that the type of capability provided by the 3PLs matters.