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mmudassarjaveed

    NFPA13 & NFPA14-FDC
    15:12
    NFPA
    12:59
    Pre action Sprinkler System
    12:10
    NFPA- 13 & 14
    17:44
    NFPA - 13
    15:10
    Zone Control Valve Assembly _ ZCV Practical
    7:32
    Zone Control Valve Assembly
    9:22