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2. This set of provisions explains the specification GB 51348-2019 Electrical Design Standard for Civil Buildings. On August 1, 2020, the specification JGJ 1 Beijing was implemented.

2. This set of provisions explains the specification GB 51348-2019 Electrical Design Standard for Civil Buildings. On August 1, 2020, the specification JGJ 1 Beijing was implemented.Zoom

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2. This set of provisions explains the specification GB 51348-2019 Electrical Design Standard for Civil Buildings. On August 1, 2020, the specification JGJ 1 Beijing was implemented.

2. This set of provisions explains the specification GB 51348-2019 Electrical Design Standard for Civil Buildings. On August 1, 2020, the specification JGJ 1 Beijing was implemented.2. This set of provisions explains the specification GB 51348-2019 Electrical Design Standard for Civil Buildings. On August 1, 2020, the specification JGJ 1 Beijing was implemented.Provide 2. This set of provisions explains the specification GB 51348-2019 Electrical Design Standard for Civil Buildings. On August 1, 2020, the specification JGJ 1 Beijing was implemented. by 广通图书专营店广通图书专营店 at chinahao.com. Product #: 580048697651.26广通图书专营店In stock