GB/T 31392-2022 Chinese PDF (GB/T31392-2022) GB/T 45131-2025 GB/T 33411-2025_Chinese: Guidelines for enzyme

GB/T 33411-2025_Chinese: Guidelines for enzyme immunoassays kit (Chinese: 酶联免疫分析试剂盒通则)

GB/T 45305

English versions: GB/T 31961-2024

7-2025_Chinese: Information technology - IT Enabled Services-Business Process Outsourcing (ITES-BPO) lifecycle processes - Part 7: Exemplar for maturity assessment (Chinese: 信息技术 IT赋能服务业务过程外包（ITES-BPO）生存周期过程 第7部分：成熟度评估范例)

2-2023_Chinese: Express service - Part 2: Organization requirements (Chinese: 快递服务 第2部分：组织要求)

GB/T 31392-2022 Chinese PDF (GB/T31392-2022) GB/T 45131-2025 GB/T 33411-2025_Chinese: Guidelines for enzymeGB T 31392 2022_Chinese: Technical guidance for the utilization of coal mine water (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31392 2022