The India Manufacturing Inc. Workers all appear to be children under the age of thirteen. They appeared in the Season Sixteen episode, "Cash For Gold", where they are seen making fine jewelry to be sold at an extremely high profit margin.
The workers at India Manufacturing Inc. are all children, who work in a sweatshop-like fashion to reprocess gold and gems to make jewelry.
All of the workers have tattered clothes, bruises, and poor hygiene. This is indicative of the poor working conditions where they are, most likely, forced to work.
None of the children working at India Manufacturing Inc. are shown to speak, and none of them appear to be remotely happy. They all seem extremely exhausted and are not proud of what they do. The look on their faces is indicative of their acceptance of their position.