China National Standards

China DSD acid（4,4’ GB Standards List

  •  China "DSD acid（4,4’" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 37038-2018 DSD acid（4,4’-Diaminostilbene-2,2’diasulfonicacid）
    DSD酸(4，4′-二氨基二苯乙烯-2，2′-二磺酸)    		 China National Standards
    DSD acid（4,4’
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