Home / Standards / GB/T 21460.1-2025 GB/T 21460.1-2025 Upcoming Plastics—Styrene-acrylonitrile (SAN) moulding and extrusion materials—Part 1: Designation system and basis for specifications 塑料 苯乙烯-丙烯腈(SAN)模塑和挤出材料 第1部分:命名系统和分类基础 Standard Type GBT ICS 83.080.20 CCS G31 Status 即将实施 Issue Date 2025-12-02 Implementation 2026-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A