We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
DDZ- series process electronic control system Impedance converter
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system Recording instrument
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Integrating instrument
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Ratio setter
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Alarm setter
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Safety barrier
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Signal selector
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Signal limiter
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Q antomatic/manual station
WITHDRAWN published on 4.1.1993
Selected format:DDZ- series process electronic control system—Stabilizey voltage supply box
WITHDRAWN published on 4.1.1993
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
© Copyright 2026 NORMSERVIS s.r.o.