chemical plant worker doing a stock inventory of barrels at a distribution warehouse - 化學人員 個照片及圖片檔化工廠, 鐵桶, 貨倉
female petrochemical inspector working on site,checking the industrial equipment - 化學人員 個照片及圖片檔石油工業, 一個人
petrochemical industry engineer working with laptop in refinery of oil and gas industry. - 化學人員 個照片及圖片檔石油工業, 職業
safety men specialist, dressed in a hazmat suit, gingerly removed a gallon of pesticides from a factory. the essential risk and accuracy associated with chemical elimination procedures. - 化學人員 個照片及圖片檔團隊工作