GB/T 27665-2024 Chinese PDF (GB/T27665-2024) GB/T 44888-2024 English versions: GB/T 19228

English versions: GB/T 19228

English versions: GB/T 45201-2024

English versions: GB/T 30237-2025

2-2025_Chinese: Plastics - Polystyrene(PS) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties (Chinese: 塑料 聚苯乙烯（PS）模塑和挤出材料 第2部分：试样制备和性能测定)

English versions: GB/T 3903

GB/T 27665-2024 Chinese PDF (GB/T27665-2024) GB/T 44888-2024 English versions: GB/T 19228GB T 27665 2024_Chinese: Test method for lasing capability of Nd: YAG laser rods (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 27665 2024