GB/T 42093.1-2022 Chinese PDF (GB/T42093.1-2022) GB/T 20183.1-2024 GB/T 45221-2025_Chinese: Chemicals - EASZY

GB/T 45221-2025_Chinese: Chemicals - EASZY assay - Detection of endorine active substances

6-2024_Chinese: Printed board assemblies - Part 6: Evaluation criteria for voids in soldered joints of BGA and LGA and measurement method (Chinese: 印制板组装 第6部分:球栅阵列（BGA）和盘栅阵列（LGA）焊点空洞的评估要求及测试方法)

2-2025_Chinese: IPv4/IPv6 network security protection technical specifications - Part 2: Mobile communication network (Chinese: IPv4/IPv6网络安全防护技术规范 第2部分：移动通信网)

English versions: GB/T 43081-2023

GB/T 42093.1-2022 Chinese PDF (GB/T42093.1-2022) GB/T 20183.1-2024 GB/T 45221-2025_Chinese: Chemicals - EASZYGB T 42093. 1 2022_Chinese: Structuring of standard document Metamodel Part 1: Full text (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 42093. 1 2022