Plastics. Styrene acrylonitrile moulding and extrusion materials. Part 1: designation system and basis for specifications.
塑料止品。苯乙烯丙烯腈模制和挤制材料。第1部分：规范用标识系统和基础。
Plastics. Styrene acrylonitrile moulding and extrusion materials. Part 1: designation system and basis for specifications.
塑料止品。苯乙烯丙烯腈模制和挤制材料。第1部分：规范用标识系统和基础。
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