DL - 96 - a CAM type 90 ° built-in locate hidden door closers & have spent The characteristics of the new technology and the convenience of the public are as follows. 1, the structure compact appearance design 2, easy installation, without locking piece fixed 3, built-in 90 ° open position, the open Angle is greater than 90 ° can stop any 4, open Angle is 90 °DL - 96 - a CAM type 96 ° built-in locate hidden door closers & have spent The characteristics of the new technology and the convenience of the public are as follows. 1, the structure compact appearance design 2, easy installation, without locking piece fixed 3, built-in 90 ° open position, the open Angle is greater than 90 ° can stop any 4, open Angle is 90 °