亚洲Av永久无码天堂影院,成人激情五月天,伊人久久亚洲综合影院首页,欧美性xxxxx极品-久久综合第一页,亚洲国产欧美日韩精品一区二区三区,91av中文,日韩2页

Contact Us

The importance of bearing on the 220V Cooling Fan

Date: 2015-6-25   Click: 1519 Times

Select Choose a good brand "220V Cooling Fan" means choosing quality, so that the DC fan is an important quality assurance from the brand. Choose from the outer surface should be considered as relatively thick, the color is pure from the appearance (especially black, the color of the fans is not important), at the edge of the box leaves no flash, see "220V Cooling Fan" blades Thickness (very important since too thin easily broken), there is no significant deformation when Yong Shounie frame. Cooling fan also choose from the bearing up because bearings are divided into two kinds of ball bearings and oil-bearing ball bearing long life, low noise, but the price is very expensive requirements. "220V Cooling Fan" oil-bearing ball bearing service life is shorter than 1/3, it may be some noise (over one year) in use for some time, but the price is cheap.

Back to: Industry news

+86-0769-83660708

Home Product News Contact