Found the compressor and pump manufacturer's factory video, probably where other's go to rebrand them...

[Airgun-hobbyist]

While researching pumps and compressor's today I found the manufacturer's factory and promotional video of these. Topa Hydraulic

https://youtube.com/@lisama3602

 

[Airgun-hobbyist]

Topa has made all kinds of how-to videos detailing the breakdown and re-assembly of their pumps and parts as well.

https://youtube.com/@lisama3602

 

[Harv24]

I love the end, such happy little communists.