The project manager , project assistant manager , project chief engineer , every functional departments person in charge , construction team leader conclude and sign the safety at work Bao Bao responsibility book one by one step till the builder,from builder of the grass-roots unit gets up most, manage tier of safety at work one by one step to higher authority being responsible, until project manager , the safety ensuring that the entirety works with all of the various levels , every branch's safety , implement at every level safety system of personal responsibility aspect.

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