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| Chinese National Standard Category: Culture, education and drawing instruments, notebooks and cards |
| English Title: | Mechanical pencils for technical drawings—Part 2:Black leads—Classification and dimensions |
| Chinese Title: | 技术制图活动铅笔 第2部分：黑铅芯 分类和尺寸 |
| Standard No.: | GB/T 39542.2-2020 |
| Category No.: | Y50 |
| Issued by: | SAMR; SAC |
| Issued on: | 2020-07-21 |
| Implemented on: | 2020-7-21 |
| Status: | superseded |
| Superseded by: | GB/T 39542.2-2025 Mechanical pencils for technical drawings—Part 2:Black leads—Classification and dimensions |
| Superseded on: | 2025-5-30 |
| Abolished on: | |
| Superseding: | |
| Word Count: | 3500 words |
| Similar Standards: | GB/T 44837-2024 GB/T 39542.3-2025 GB/T 39542.2-2025 GB/T 39023-2025 GB/T 26711-2024 GB/T 26717-2024 GB/T 26698-2022/XG1-2024 GB/T 26698-2022 T/SCIPA 003-2024 T/CSSGA 1043-2023 GB/T 42822-2023 GB/T 43550.2-2023 GB/T 43550.1-2023 GB/T 26704-2022 GB 21027-2020 GB/T 39765-2021 T/CSSGA 1031-2021 GB/T 39542.2-2020 GB/T 39542.1-2020 GB/T 37853-2019 |
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