There is a place in korangi near the olde brookes pharma/ cat office who do dry ice blasting for industrial customers, i think they refuse custom/car/motorcycle work now due to tiktok/instagram morons showing up with their idiotic and stupid behaviour..
For glass blasting you can check bohrapir area. Sand blasting is easy and ton of places in site area do it, ask for “machine repairs places” like lathe and industrial motor drive refurbishing, eastern studio compound is one place i remember, dont know if its there or not anymore.
