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    Scientists are check chemical residues in the laboratory. food lab, chemical hazards, ROHs, find prohibited substances, export, contaminate,GMP, GAP, HACCP, ISO, international and global standards. Free Video

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    Resolution:4K 3840x2160
    File Type:QuickTime
    Codec:mjpeg
    Frame Rate:25 FPS
    Aspect Ratio:16:9
    Duration:00:20