Str floor grinder prepping help

[Flatfloors]

Hi all , just a quick question , I’ve got a amtico job for some new build flats.

Its specd to get Str and I was wondering what pad I use for the bottom of the floor buffer machine?

I was looking to get this one
https://www.hss.com/hire/p/floor-scrubber-polisher-110vPlease help lol anyone with experience in this?

also do I Str before and after latexing ?
Many thanks

 

[C.J.]

What is str?

 

[JPfloor]

https://www.stonhard.com/ProductFiles/stonhard/Stonres STR Product Data - en_US.pdf