Determination of ozone-depleting substances including CFC-12, HCFC-22, CFC-11 and HCFC-141b in rigid polyurethane foam and pre-blended polyether polyols—Portable headspace/gas chromatography-mass spectrometry
标准号:HJ 1058-2019
2019-10-31 实施
2019-10-31 实施
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