How to choose a suitable door closer?

Choose a suitable door closer according to the conditions of use. For example, in northern regions or countries, you should use a low-condensation hydraulic oil door closer; where there are fire protection requirements, you should use a fire-resistant door closer; Adjustable power door closer etc. Of course, since the country does not have strict regulations at present, the current door closer market is chaotic and the quality is also uneven, such as high oil leakage rate, short service life, insensitive adjustment of the regulating valve, and hydraulic oil that cannot meet the requirements of fire protection or antifreeze and other quality issues. When choosing a product, it is recommended to choose a professional manufacturer, so that the quality and service can be guaranteed.