I think India, because I travel a lot in India covering most of the places like Hyderabad, Vijayawada & Guntur. When my uncle's business was running all these mentioned places, I saw cleaners with the name
Goklean4u
on their back of the T-shirts. Even I saw them in Guntur and Vijayawada as well. The main thing that attracts me is their unique welcoming and politeness towards the customers.

https://www.goklean4u.com