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ALI American Ladder Institute
موسسه نردبان آمريکا
ALI ALI is the ANSI-approved developer of standards for ladder safety. These standards contain technical specifications developed and tested by subject experts which prescribe rules governing the safety of construction design testing care and use of various types of ladders.
سال : 2018 تعداد :16 دسته :Special اشتراک :Subscribe پیمایش استانداردها >>

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