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See Chinese contents: GB/T 3780.18-2017 GB/T 3780.18-2017: Carbon black -- Part 18: Standard test methods for evaluation in Natural Rubber (NR)
This Part of GB/T 3780 specifies the rubber ingredients, test formulations, compound mixing procedures and test methods for identifying the physical and mechanical properties of carbon black in natural rubber. This Part is applicable to identify various types of rubber carbon black.
