GB/T 18964.1-2025 Chinese PDF (GB /T18964.1-2025)GB T 18964. 1 2025_Chinese: Plastics Impact resistant polystyrene(PS I) moulding and extrusion materials Part 1: Designation system and basis for specifications (Chinese: PS I 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18964. 1 2025
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