GB/T 14227-2024 Chinese PDF (GB/T14227-2024) GB/T 20424-2025 English versions: GB/T 45130-2025

English versions: GB/T 45130-2025

GB/T 28988-2024_Chinese: Technical code of practice for flower pest control (Chinese: 花卉有害生物防治技术规程)

GB/T 33296-2025_Chinese: Quality requirements and test methods for shale gas products (Chinese: 页岩气产品质量要求和试验方法)

GB/T 14408-2024_Chinese: Low alloy steel castings for general engineering and structural purposes (Chinese: 一般工程与结构用低合金钢铸件)

2-2024_Chinese: Public information guidance systems - Setting principles and requirements - Part 2: Airport (Chinese: 公共信息导向系统 设置原则与要求 第2部分：民用机场)

GB/T 14227-2024 Chinese PDF (GB/T14227-2024) GB/T 20424-2025 English versions: GB/T 45130-2025GB T 14227 2024_Chinese: Acoustical requirement and measurement on station platform of urban rail transit (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 14227 2024