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See Chinese contents: GB/T 33999-2017 GB/T 33999-2017: Limits and determination of lead, cadmium, mercury, arsenic and hexavalent chromium in glass fiber
This Standard specifies limits and determination of lead (Pb), mercury (Hg), cadmium (Cd), arsenic (As) and hexavalent chromium (Cr6+) in glass fiber. This Standard is applicable to glass fiber as well as its products. For coated glass fiber products, glass fiber in glass fiber reinforced plastics, after removing the coated or attached components, this Standard also applies.
