AS ISO 20807:2020 pdf download.Non-destructive testing一Qualification of personnel for limited application of non-destructive testing. 6 Vision requirements 6.1 The candidate shall provide documented evidence of satisfactory vision in accordance with the following requirements: a) near-vision acuity shall...
![AS ISO 20807:2020 pdf download](https://www.xxhh8.cn/wp-content/themes/xxhh8/assets/images/loading.png)