Hi Thoedthai, I appreciate your hard work and we will check with Fullbody harness vedor.but from the picture you show ,it is dangerous behave.
please inform the Huawei QC team, for Huawei policy ,QC will not work at height,if it is no choice and should check at height,then should also not stay long time in the height.
even if you have certificate,but we worry you do not get qualified trained).
For quality check ,please first use to the tool(like telescope, camera ,ask subcon to take photo),sometimes need to climb tower to check ,but should not stay in the tower for long time.