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 Jts Building Materials Co., Ltd.,Xiamen Pari Stone Co., Ltd.,FOSHAN STRONG QUARTZ CO., LTD,Shenzhen Chiva Industry Co., Ltd.,Shandong Liyin Intelligent Equipment Co., Ltd. via the red button for more infomation.