GB/T 4214.21-2025 Chinese PDF (GB /T4214.21-2025) GB/T 22211-2025 1-2024_Chinese: General technical requirements for

1-2024_Chinese: General technical requirements for agricultural internet of things - Part 1: Field planting (Chinese: 农业物联网通用技术要求 第1部分：大田种植)

GB/T 43590

GB 23394-2024_Chinese: Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus (Chinese: 呼吸防护 正压式自给闭路压缩氧气呼吸器)

English versions: GB 35181-2025

GB/T 15237-2025_Chinese: Terminology work and terminology science - Vocabulary (Chinese: 术语工作及术语科学 词汇)

GB/T 4214.21-2025 Chinese PDF (GB /T4214.21-2025) GB/T 22211-2025 1-2024_Chinese: General technical requirements forGB T 4214. 21 2025_Chinese: Test method for noise of household and similar electrical appliances Part 21: Particular requirements for oral hygiene appliances (Chinese: 21) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 4214. 21 2025