GB/T 20818.22-2023 Chinese PDF (GB/T20818.22-2023) GB/T 4698.29-2024 GB/T 534-2024_Chinese: Sulphuric acid for

GB/T 534-2024_Chinese: Sulphuric acid for industrial use (Chinese: 工业硫酸)

GB/T 45486-2025_Chinese: Ships and marine technology - Ballast water management systems (BWMS) - Computational physical modelling and calculations on scaling of UV reactors (Chinese: 船舶与海上技术 压载水管理系统（BWMS） 紫外反应器的比例缩放数值模拟与计算)

English versions: GB/T 15231-2023

English versions: GB/T 4213-2024

English versions: GB/T 45110

GB/T 20818.22-2023 Chinese PDF (GB/T20818.22-2023) GB/T 4698.29-2024 GB/T 534-2024_Chinese: Sulphuric acid forGB T 20818. 22 2023_Chinese: Industrial process measurement and control Data structures and elements in process equipment catalogues Part 22: Lists of properties (LOPs) of valve body assemblies for electronic data exchange (Chinese: 22(LOPs)) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20818. 22 2023