Recently, a heavy truck towed by a white new energy tractor slowly drove into Hebei Fengmei Coking Co., Ltd., and the gate electronic access control system recognized it and lifted the pole and released it.According to Li Guoliang, the company's head of environmental protection, the company is conducting an A-A environmental performance, one of which is that the proportion of new energy freight transportation must reach more than 80%. At present, the company's daily traffic volume of heavy truck