GB/t 3780.21

GB/t 3780.21, Total:4 items.

The international standard classification for "GB/t 3780.21" includes: Auxiliary materials and additives for plastics , Rubber compounding ingredients .

The Chinese standard classification for "GB/t 3780.21" includes: Carbon black .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 3780.21-2002 Carbon black used in rubber products--Determination of sieve residue--Water washing method
GB/T 3780.21-2016 Carbon black - Part 21: Determination of sieve residue - Water flushing method
GB/T 3780.21-2025 Carbon black—Part 21：Determination of sieve residue—Water washing method
GB/T 3780.21-2006 Carbon black - Part 21: Determination of sieve residue for rubber compounding ingredients - Water washing method