Note 42.1 — LOS INTERESES CREADOS

que, malvendiéndolos (freely translated) 'when, by selling them (even) at a loss.' Here que may be taken as a relative pronoun, direct object of malvendiendo; in this case los repeats que. Or we may assume that que is a relative pronoun having no grammatical connection with what follows (i.e. the phenomenon known as anacolouthon). This que might also be considered a conjunction introducing an additional statement that amounts to an objection ('but,' 'for,' 'when'). In any case the general meaning of the sentence is clear.