China-based OLED lighting developer Yeolight Technology started building a 4.5-Gen OLED lighting production line, in Huaibei City, Anhui Province, China in May 2022. The company is now starting to move in and install the first production equipment. The total equipment cost is estimated at 800 million Yuan (about $111 million USD).
Yeolight says that the new fab, when complete, will have a capacity of around 7 million panels in a year, or 1.2 million automotive lighting modules (probably referring to rear light modules). This will be the world's largest OLED lighting fab, when complete.
Source:
https://www.oled-info.com