"Subject it to 120°C for a mere 15-20 minutes, and witness a transformation"
I would not recommend heat treating unless you absolutely need it, and then, careful consideration needs to be taken regarding part geometry.
I ruined a part that took 3 days to print, as it warped and curled so badly that it rendered the part scrap.
I'm not saying it's a fault with the material, but there are many factors at play when you put a part in a heated environment necessary to achieve the properties desired.
So don´t think that you're just going to pop a part into the oven at 120C and wait 15 minutes and have a stronger part. Make sure your oven is calibrated, Consider the part geometry carefully. And consider whether you actually need to heat treat the part.
Otherwise happy with the filament! I will order it again.
El filamento es de calidad y muy bonito. Servicio rápido y por teléfono fueron muy amables ante mis dudas