petroleum and oil production industry thin line icons - editable stroke - 精煉廠 幅插畫檔、美工圖案、卡通及圖標圖示, 機油, 氣體
gas station line icon set. group of object. oil industry, petrol, fuel pump, gas tank, gas can, biofuel. - 精煉廠 幅插畫檔、美工圖案、卡通及圖標圖示, 能源
power and energy industry line icon set. electricity, ecology, sustainability, gas. - 精煉廠 幅插畫檔、美工圖案、卡通及圖標圖示, 能源, 氣體
heavy and power industry related line style banner design for web page, headline, brochure, annual report and book cover - 精煉廠 幅插畫檔、美工圖案、卡通及圖標石油化工廠, 圖示, 管道