施工升降机安装拆卸工 - Tapa blanda

Construction elevator installation and removal work(Chinese Edition)

paperback. Condición: New. Language:Chinese.Paperback. Pub Date: 2019-05-01 Publisher: China Building Industry Press construction of special operations personnel are in housing construction and municipal construction activity. engaged in operations that may cause significant harm to himself. and the safety of others around the equipment and facilities personnel. Ministry of Construction of special operations personnel need to be trained to take the examination certificate to posts. the agency is now a special operation. Nº de ref. del artículo: NN031852

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