Are these ESCs and motors all the same?

Does anyone know if these all come from the same factory? Are they all the same quality and performance?



This product is no longer available.?

it looks as though they all come out of teh same factory. Is the factory Maytech?

Zeal esc seems to work well , some built here …
May… esc even looking similar is higher so the capacitors are not the same …

For motor , I think there is different factory or at least for sure there is different mount ( seals and quality and quality check …)