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Cleaning large billboard



Detailed Notes:
Billboard cleaning acceptance criteria and precautions
    (1) a billboard after washing clean, clean, beautiful like new (except for color advertising cloth itself).
    (2) cleaning down the speed too quickly, to avoid leakage, resulting in the watermark, affecting cleaning results.
    (3), as the billboard texture, some of the acidic, alkaline cleaning agents should not be abused too.
    (4) four or more wind weather should not be operating.
    (5) of the two-story billboard above must use seat belts work.
    (6) Note: When cleaning billboards take appropriate protective measures (such as: completely cut off the power, seat belt, etc.

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