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The signature of the electronic certificate of the second-level constructor in Anhui Province is valid.
180 days. According to Sohu News Network, the effective time for signing the electronic certificate of the second-level constructor in Anhui Province is 180 days. The second-level constructor is an architectural professional qualification and a necessary condition for being a project manager. Registered construction engineer is a registered practitioner who relies on professional technology and takes project management as the core.