What's Holding Back the Batch Oven in India Industry?

https://mill-wiki.win/index.php/The_10_Scariest_Things_About_Batch_Oven_Delhi

Batch Oven - Different Size of Chamber with Tray & Trolley for Easy Placement of Raw Material. Maximum Temperature 450� C. Heating Source: Electric, Gas-Fired, Diesel-Fired, Steam & Thermic OIL.