GB/T 19267.1-2023 Chinese PDF (GB/T19267.1-2023)GB T 19267. 1 2023_Chinese: Forensic sciences Physical and chemical examination of trace evidence Part 1: Infrared absorption spectrometry (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19267. 1 2023
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