China National Standards

China Building intercom systems―Part GB Standards List


  •  China "Building intercom systems―Part" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 31070.1-2014 Building intercom systems―Part 1: General technical requirements
    楼寓对讲系统 第1部分:通用技术要求
    China National Standards
    Building intercom systems―Part

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