Based on the provided source material, there is no information regarding a city named Yingli in the Shandong region of China. The name "Yingli" refers specifically to Yingli Green Energy Holding Company Limited, also known as "Yingli Solar."
Yingli Green Energy is a solar panel manufacturer that operates across the entire photovoltaic value chain. Its manufacturing processes include ingot casting, wafering, solar cell production, and solar panel assembly.