We have already researched successfully a New-Style Door Closer, as well as manufactured the products. As unique characterizations are as follows: 1.The New Working Theory. 2.Closing The Door Automatically And Slowly Without The Noise. 3.The Long Using Life. 4.Being Used To Many Ranges. 5.The Well Opening And Closing Performance. 6.The Strong Oil proof. 7.Preventing Completely The Oil Of Door Closer From Leaking. 8.Working Under Temperature 50℃.