GB/T 31274-2024 Chinese PDF (GB/T31274-2024) GB/T 21478-2024 GB/T 45398-2025_Chinese: Information technology -

GB/T 45398-2025_Chinese: Information technology - Crowdsourcing service platform - General requirements for functions (Chinese: 信息技术 众包服务平台 功能通用要求)

English versions: GB/T 45307-2025

English versions: GB/T 43018

English versions: GB 31825-2024

English versions: GB/T 32251-2024

GB/T 31274-2024 Chinese PDF (GB/T31274-2024) GB/T 21478-2024 GB/T 45398-2025_Chinese: Information technology -GB T 31274 2024_Chinese: Restricted substances management systems for electrical and electronic products Requirements (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31274 2024