A cooling system for a blast furnace includes a cooling circuit closed by a return line and at least one circulation pump for circulating cooling water through the closed cooling circuit. Each column of data line in the display panel has two sub-data lines. Plasma formation in the shield gas is minimized by increasing the proportion of helium as the laser beam’s power or power density increases. By using the gateway, end-users can mesh together traditionally standalone, incompatible, networks into a universally accessible, centrally administered, \u201csuper-network. Each of the two faces of the openclose plate opens and closes each of the corresponding opening sections that face the respective two faces of the openclose plate. A method for synthesizing the compounds is also provided.