a cheerful male worker wearing a safety helmet and protective gear speaks on a headset in a bustling factory environment, emphasizing industry safety and productivity. - 工作安全頭盔 個照片及圖片檔
high angle look down view over young asian technician worker climbing ladder for inspect or maintenance machine in high voltage electric transformer sub station. industrial business occupation worker concept. - 工作安全頭盔 個照片及圖片檔
civil engineers checking works according to project using digital tablet at construction site - 工作安全頭盔 個照片及圖片檔
