The present invention provides pyridine derivatives useful as intermediates of drugs and agricultural chemicals, electrophotographic receptors, dyes and so on. The integrated liquid cooling device has a housing enclosing the electronic component, cooling liquid contained in the housing, a motor immersed in the cooling liquid and mounted to the housing, an impeller driven by the motor, and cooling surfaces on the exterior of the housing. Engaging members are provided at spaced intervals along each panel, with additional engaging members provided at spaced intervals along the support base. Additional ball-joints may be provided to increase the allowed range of motion of the antenna.