"Indian space-tech start-up Agnikul announced the opening of its Rocket Factory...located at IIT Madras Research Park" https://www.business-standard.com/article/companies/agnikul-launches-india-s-first-rocket-facility-for-3d-printed-engines-122071301207_1.html
"the facility is situated at the IIT Madras Research Park " https://www.thehindu.com/news/national/tamil-nadu/agnikul-cosmos-opens-facility-to-make-3d-printed-rocket-engines/article65636496.ece

Agnikul Cosmos 
National Center for Combustion
https://agnikul.in

https://taginfo.openstreetmap.org/keys/aerospace:product#values
https://taginfo.openstreetmap.org/search?q=3d_printing