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
Plastics - Polyether polyols - Part 3: Determination of hydroxyl number
Standard published on 15.6.2009
Selected format:Plastics - Polyether polyols - Part 4: Determination of sodium and potassium
Standard published on 15.6.2009
Selected format:Plastics - Polyether polyols - Part 5Determination of acidity as acid number
Standard published on 26.9.2010
Selected format:Plastics - Polyether polyols - Part 6: Determination of degree of unsaturation
Standard published on 26.9.2010
Selected format:Plastics - Polyether polyols - Part 7Determination of viscosity
Standard published on 26.9.2010
Selected format:Plastics—Polyether polyols for use in the production of polyurethane—Part 7:Determination of basicity
Standard published on 28.3.2025
Selected format:Isocyanates--Determination of total chlorine content
Standard published on 25.12.1989
Selected format:Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 2: Determination of hydrolysable chlorine
Standard published on 24.2.2016
Selected format:Plastics - Polymethylene polyphenyl isocyanate - Part 3: Determination of viscosity
Standard published on 15.6.2009
Selected format:Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 4: Determination of isocyanate content
Standard published on 24.2.2016
Selected format:Latest update: 2026-03-20 (Number of items: 2 268 518)
© Copyright 2026 NORMSERVIS s.r.o.