In recent years, "DC Axial Fan" workshop for high temperature ventilation and cooling is a good tool, if you want curtain proved more pronounced cooling fan, fan curtain will require a combination of suction fan is used with negative ideal curtain shop suction fan cooling fan cooling than unbound more obvious. higher the outside temperature, the cooling effect will be more obvious, but when we use the "DC Axial Fan" points to note when cool, let us work together to understand the following about it! Curtain curtain with suction fan is mainly composed of a combination of suction fan, the main use of air convection, the work principle of negative pressure ventilation In this regard we need to do a good job sealing the workshop, if seal is not good, it will so "DC Axial Fan" cooling effect is reduced, negative pressure below standard, thereby causing air curtain without directly into the workshop.