The copyright certificate for the company's visual IP broadcasting software has been issued, which can be used for bidding projects with software copyright requirements in the future.
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1、 According to the construction requirements of the public address system, the construction should be carried out in accordance with the national standard of the People's Republic of China "Code for...
At present, it is common to design and install background music systems in newly built or renovated buildings or public entertainment venues. As an emergency alarm broadcasting system in case of fi...
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