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See Chinese contents: GB/T 25254-2022 GB/T 25254-2022: Poly-(tetra methylene ether glycol)(PTMEG) for industrial use
This Document specifies the classification and naming, technical requirements, test methods, inspection rules, marking and accompanying documents, packaging, transportation and storage of poly-(tetra methylene ether glycol) (PTMEG) for industrial use. This Document applies to industrial PTMEG produced by polymerization of tetrahydrofuran monomer.
