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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 31070.3-2021 |
Building intercom systems—Part 3:Technical requirements for specific applications 楼寓对讲系统 第3部分:特定应用技术要求 |
China National Standards Building intercom sy |
 English PDF |
| GB/T 31070.2-2018 |
Building intercom systems—Part 2: Technical requirements for digital building intercom systems 楼寓对讲系统-第2部分:全数字系统技术要求 |
China National Standards Building intercom sy |
English PDF |
| GB/T 31070.4-2018 |
Building intercom systems—Part 4: Application guidelines 楼寓对讲系统-第4部分：应用指南 |
China National Standards Building intercom sy |
English PDF |
| 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 sy |
English PDF |
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