civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:13
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:18
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:10
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:10
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:13
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:10
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:12
civil engineer, and foreman are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:10
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:07
civil engineer, and foreman are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:15
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:10
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:08
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:16
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:12
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:09
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:14
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:14
civil engineer, and foreman are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:12
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:16
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:22
civil engineer, foreman and master are discussing on the progress plan and the project at construction site - 工程師節 個影片檔及 b 捲影像00:17
top view industrial engineer and water quality staff hold drawing and laptop discussing on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:15
top view industrial engineer and water quality staff hold drawing and laptop discussing on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:15
top view industrial engineer and water quality staff hold drawing and laptop discussing on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:16
top view industrial engineer and water quality staff hold drawing and laptop discussing on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:11
top view industrial engineer and water quality staff hold drawing and laptop discussing on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:09
top view industrial engineer and water quality staff hold drawing and laptop discussing on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:22
aerial view industrial engineer and water quality staff woring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:12
aerial view industrial engineer and water quality staff woring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:11
aerial view industrial engineer and water quality staff woring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:17
aerial view industrial engineer and water quality staff woring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:09
aerial view industrial engineer and water quality staff woring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:22
two industrial workers dressed in red overall suit work with drawing and laptop uniforms at staircase platform connects two large blue industrial tanks or vessels., water treatement - 工程師節 個影片檔及 b 捲影像00:10
two industrial worker or engineer dress red overal suit and ppe walks up the stairs to perform work at the top of a large water tank, water facility, municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:17
aerial view industrial engineer and water quality staff waring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:12
aerial view industrial engineer and water quality staff waring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:13
aerial view industrial engineer and water quality staff waring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:17
aerial view industrial engineer and water quality staff waring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:07
aerial view industrial engineer and water quality staff waring red suit and ppe work on top of huge water storage tank municipal water treatment plant - 工程師節 個影片檔及 b 捲影像00:13
young engineers wearing safety helmets and vests walking down exterior staircase attached to a large blue industrial tank, water treatement factory - 工程師節 個影片檔及 b 捲影像00:20
aerial view engineers wearing green safety vest and hardhat walking down exterior staircase attached to a large blue industrial tank, water treatment factory - 工程師節 個影片檔及 b 捲影像00:16
two engineers wearing safety helmets and reflective vests are inspecting and discussing technical data on a platform at an industrial water treatment facility - 工程師節 個影片檔及 b 捲影像00:10
two engineers wearing safety helmets and reflective vests are inspecting and discussing technical data on a platform at an industrial water treatment facility - 工程師節 個影片檔及 b 捲影像00:16
two engineers wearing safety helmets and reflective vests are inspecting and discussing technical data on a platform at an industrial water treatment facility - 工程師節 個影片檔及 b 捲影像00:13
two engineers wearing safety helmets and reflective vests are inspecting and discussing technical data on a platform at an industrial water treatment facility - 工程師節 個影片檔及 b 捲影像00:09
two engineers in safety helmets and reflective vests standing on a platform between two large blue industrial tanks, engaged in a conversation or inspection - 工程師節 個影片檔及 b 捲影像00:20
two engineers in safety helmets and reflective vests standing on a platform between two large blue industrial tanks, engaged in a conversation or inspection - 工程師節 個影片檔及 b 捲影像00:22
two engineers in safety helmets and reflective vests standing on a platform between two large blue industrial tanks, engaged in a conversation or inspection - 工程師節 個影片檔及 b 捲影像00:11
two engineers in safety helmets and reflective vests standing on a platform between two large blue industrial tanks, engaged in a conversation or inspection - 工程師節 個影片檔及 b 捲影像00:12
two engineers in safety helmets and reflective vests standing on a platform between two large blue industrial tanks, engaged in a conversation or inspection - 工程師節 個影片檔及 b 捲影像00:18