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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 17889.1-2021 |
Ladders -- Part 1: Terms, types, functional sizes 梯子 第1部分：术语、型式和功能尺寸 |
China National Standards Ladders 1: Terms, |
 English PDF |
| GB/T 17889.1-2012 |
Ladders - Part 1: Terms, types, functional sizes 梯子 第1部分：术语、型式和功能尺寸 |
China National Standards Ladders 1: Terms, |
English PDF |
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