Without a doubt, whether the metric is net margin or balance sheet, the most profitable construction companies are full service type, providing“design, engineering, project management, construction and procurement” in the heavy industrial and civil sectors. You can contact Foshan Shengkailo Building Materials Co., Ltd.,Foshan Shengkailo Building Materials Co., Ltd.,Foshan Grand Ceramics Co., Ltd.,Xiamen Carmel Stone Industry Co., Ltd,Foshan Hanse Industrial Co., Ltd. via the red button for more infomation.