The reporter was informed that the subject of the "diesel engine cylinder flexible processing production line" jointly declared by Changchai Hui, Shenyang Machine Tool (Group) Co., Ltd., Tongji University, and the Third Design and Research Institute of Machinery Industry wa.......

Driven by the purchase of large companies such as Sinochem and Zhongnong, the domestic urea market is still on the upward trend. Urea enterprises in the north have concentrated their prices recently, among which, Shandong urea companies offer 1,970 yuan/ton, and actual transactions reach 1.......

As a natural phenomenon, just as water flows from low to high, the heat also always flows from high to low temperature. But people can create machines that use water pumps to pump heat from low to high temperatures, just as water is raised from low to high. Therefore, the heat pump is essen.......

Axial pump performance characteristics is what? Use, should pay attention to what issues? Axial flow pump shape and working principle of centrifugal pumps are different, its performance is also very different. In practice, we must strictly distinguish between the use of dif.......