A staff member of Luan Solar Technology Co, a subsidiary of Lu'An Group, picks vegetables at a PV greenhouse in Changzhi, Shanxi province, July 20. There are 22 companies engaged in the photovoltaic manufacturing industry across the province. A complete industrial chain from ingot casting to photovoltaic cell manufacturing and installation has been formed with quality PV products in high demand. [Photo/Xinhua]

A worker transports monocrystalline silicon sticks at Luan Solar Technology Co, a subsidiary of Lu'An Group in Changzhi, Shanxi province, July 20. [Photo/Xinhua]