You Do Need power plug adapter while traveling from Paraguay to Laos.

Here is Why You Need An Adapter

The outlet and plug type used in Laos are A, B, C, E and F and in Paraguay is C. This is how they look like.

Paraguay

In Paraguay, outlets of type C are in use.

Type C

Laos

In Laos, outlets of type A, B, C, E and F are in use.

Type A

Type B

Type C

Type E

Type F