From EOGamer Lineage 2 Wiki
|Start Location:||Dwarven Village||Repeatable:||.|
|Start NPC:||Inventor Maru||Updated to:||Unknown|
Basically everything in the area meets her list, so it's an easy quest and the drop rate is high. You can return with any number of items and it's unlimited.
Inventor Maru rewards you with adena based on the amount turned in. Quest is repeatable.