Is Hefei Rainbow Photovoltaic an assembly line factory?

No, according to official website of Rainbow (Hefei) Photovoltaic Co., Ltd., this company is a broken company, not an assembly line, so Hefei Rainbow Photovoltaic is not an assembly line factory. Hefei, referred to as "Lu" or "He", was called Luzhou, Luyang and Hefei in ancient times. It is a prefecture-level city, provincial capital and megacity under the jurisdiction of Anhui Province, located in East China.