No, I don't think they are hand made in the USA, barely anything is anymore. I wouldn't even compare Jaebo to Vortech because they are totally different. Jaebo copied TUNZE and put a Ecotech sounding name on it. Tunze is made in Germany. Plastic is plastic but there are low quality and high quality magnets and amateur and professional soldering and low quality and high quality way of sealing the parts from water damage. Fit and finish, quality of shafts and R&D is what I'm mostly thinking of. Flagrant copying is also immoral and one of the reasons the Chinese own half the US. I for one don't buy into the hype, I try to buy quality products when I can even if it costs a little more. Your tone is extremely defensive so obviously I hit nerve. Jaebo pumps might be a fine cheap pump, but don't think for a second they match the quality of a Vortech or Tunze.