GB 21252-2023 Chinese PDF GB/T 29456-2025 GBZ45261-2025_Chinese: Course development guide for

GBZ45261-2025_Chinese: Course development guide for education about standardization - Fundamentals of conformity assessment (Chinese: 标准化教育课程建设指南 合格评定基础知识)

GB/T 45590-2025_Chinese: Detection and identification of Le ptos phaeria lindquistii Frezzi (Chinese: 向日葵黑茎病菌检疫鉴定方法)

GB/T 44990-2024_Chinese: Test method for interface bonding strength of coating by laser cladding repairing (Chinese: 激光熔覆修复层界面结合强度试验方法)

GB/T 17821-2025_Chinese: Rubber latex - Determination of density between 5 ℃ and 40 ℃ (Chinese: 胶乳 5℃至40℃密度的测定)

English versions: GB 14866-2023

GB 21252-2023 Chinese PDF GB/T 29456-2025 GBZ45261-2025_Chinese: Course development guide forGB 21252 2023_Chinese: Norm of energy consumption for unit production of architecture and sanitary ceramics and alumina grinding ball (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 21252 2023