Artificial lighting for indoor growing systems(1/6)

A view of vegetables growing in a plant farm belonging to the Institute of Advanced Technology at the University of Science and Technology of China in Hefei, Anhui Province, March 11, 2019. The farm, housed inside a closed container, uses artificial lighting to help the vegetables grow well. Dr. Zhang Fangxin, the general manager of Anhui Angkefeng Photoelectric Technology, said the system allows plants to grow well even when placed in an underground space. (Photo: China News Service/Wu Lan)

A view of vegetables growing in a plant farm belonging to the Institute of Advanced Technology at the University of Science and Technology of China in Hefei, Anhui Province, March 11, 2019. The farm, housed inside a closed container, uses artificial lighting to help the vegetables grow well. Dr. Zhang Fangxin, the general manager of Anhui Angkefeng Photoelectric Technology, said the system allows plants to grow well even when placed in an underground space. (Photo: China News Service/Wu Lan)

A view of vegetables growing in a plant farm belonging to the Institute of Advanced Technology at the University of Science and Technology of China in Hefei, Anhui Province, March 11, 2019. The farm, housed inside a closed container, uses artificial lighting to help the vegetables grow well. Dr. Zhang Fangxin, the general manager of Anhui Angkefeng Photoelectric Technology, said the system allows plants to grow well even when placed in an underground space. (Photo: China News Service/Wu Lan)

A view of vegetables growing in a plant farm belonging to the Institute of Advanced Technology at the University of Science and Technology of China in Hefei, Anhui Province, March 11, 2019. The farm, housed inside a closed container, uses artificial lighting to help the vegetables grow well. Dr. Zhang Fangxin, the general manager of Anhui Angkefeng Photoelectric Technology, said the system allows plants to grow well even when placed in an underground space. (Photo: China News Service/Wu Lan)

A view of vegetables growing in a plant farm belonging to the Institute of Advanced Technology at the University of Science and Technology of China in Hefei, Anhui Province, March 11, 2019. The farm, housed inside a closed container, uses artificial lighting to help the vegetables grow well. Dr. Zhang Fangxin, the general manager of Anhui Angkefeng Photoelectric Technology, said the system allows plants to grow well even when placed in an underground space. (Photo: China News Service/Wu Lan)

A view of vegetables growing in a plant farm belonging to the Institute of Advanced Technology at the University of Science and Technology of China in Hefei, Anhui Province, March 11, 2019. The farm, housed inside a closed container, uses artificial lighting to help the vegetables grow well. Dr. Zhang Fangxin, the general manager of Anhui Angkefeng Photoelectric Technology, said the system allows plants to grow well even when placed in an underground space. (Photo: China News Service/Wu Lan)