Portrait Worker Engineer in a White Helmet and Uniform Inspects the Quality of Concrete By

Looped Video: No, Frame Rate: 25, Resolution: 3840x2160, Video Encoding: H.264, File Size: 107.94MB, Number of Clips: 1, Total Clip(s) Length: 00:17, Source Audio: No, No. of People: 1, Gender: Male, Age: Young Adult, Ethnicity: Caucasian

quality control checking concrete composition, diagnosis of defects in the construction of buildings

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