The daily mud production on the project site is 10 tons, the processing cost of the tons is ￥1,500, and the daily processing cost is ￥15,000. After using the dryer of our company, the daily weight reduction is 6.8 tons, the processing cost per ton is 240 yuan (local natural gas cost is ￥3.5/m³), and the daily cost is ￥7,800.