vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:15
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:12
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:15
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:11
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:15
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:15
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:15
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:15
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:12
vdo 4k engineer service check and service solar cell on the roof of factory. engineers walking on roof inspect and check solar cell panel. - 冷凝管 個影片檔及 b 捲影像00:11
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:16
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:07
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:16
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 冷凝管 個影片檔及 b 捲影像00:10