After the "Cross Flow Fan" cooling fan use is determined, based on the performance requirements of the cooling fan, cooling fan first determine the grade, the decision is the choice of domestic or imported cooling fan cooling fan. Then, you want to do the right cooling fan manufacturer-specific grades of basic understanding of the information to determine cooling fan manufacturer's production capacity, product quality, product specifications, product price, but also consider the cooling fan environmental standards. Fan selection process, but also consider the manufacturer's technical strength, maintenance levels, whether the cooling fan after-sales service in a timely manner, can guarantee the normal use of the cooling fan. In addition, the cooling fan manufacturers in new product development performance, to reflect the strength of its technology, consideration should also be included in the selection.