GB/T 42251-2022 Chinese PDF (GB/T42251-2022) GB/T 22180-2024 GB/T 45598-2025_Chinese: Fine ceramics -

GB/T 45598-2025_Chinese: Fine ceramics - Test method of elastic modulus

2-2024_Chinese: Devices and integration in enterprise systems - Function blocks(FB) for process control and electronic device description language(EDDL) - Part 2: Specification of FB concept (Chinese: 企业系统中的设备和集成 过程控制用功能块（FB）和电子设备描述语言（EDDL） 第2部分：FB概念规范)

1-2025_Chinese: Optics and photonics - Test methods for telescopic systems - Part 1: Basic characteristics (Chinese: 光学和光子学 望远镜系统试验方法 第1部分：基本特性)

English versions: GB/T 29418-2023

English versions: YY 1105-2024

GB/T 42251-2022 Chinese PDF (GB/T42251-2022) GB/T 22180-2024 GB/T 45598-2025_Chinese: Fine ceramics -GB T 42251 2022_Chinese: Technical regulations for ecological restoration of mining subsidence area (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 42251 2022