GB/T 19473.2-2020
Polybutene (PB) piping systems for hot and cold water installations—Part 2: Pipes
GB/T 19473.2-2020
GB/T 19473.2-2020
Determination of isobutylene-isoprene rubber or polyisobutylene content in rubber
GB/T 19473.2-2020
Maleic anhydride for industrial use
GB/T 19473.2-2020
Plastics—Polybutene(PB) moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties
GB/T 19473.2-2020
GB/T 19473.2-2020
Crotonaldehyde for industrial use
GB/T 19473.2-2020
GB/T 19473.2-2020
Isobutene-isoprene rubber
GB/T 19473.2-2020
Methyl butenol polyether
GB/T 19473.2-2020
Determination methods of total content of cis-2-butenedioic acid and cis-2-butenedioic anhydride in foods for export
GB/T 19473.2-2020
GB/T 19473.2-2020
GB/T 19473.2-2020
Isobutene for industrial use-Specification
GB/T 19473.2-2020
GB/T 19473.2-2020
GB/T 19473.2-2020
Isobutene for industrial use-Determination of dimer of isobutene-Gas chromatographic method
GB/T 19473.2-2020
Insulating liquids-Unused polyisobutene
GB/T 19473.2-2020
GB/T 19473.2-2020