Hardware Difference between alps and normal analog

[YuseiFD]

Hello, i've been wanting to change my vita 2000 left analog stick, but i keep finding these "alps" choices in aliexpress, anyone has any idea on what is this kind of variant ???

 

[Shardnax]

Alps is a company that makes switches, sensors, and such; I presume they're referring to that company. As to whether or not the sticks you've looked at are actually Alps is anyone's guess.