日本特级淫片免费看,综合色一区二区三区,天天射天天更新天天日,最新日韩精品视频免费在线观看,av免费在线观看欧洲,女人一区二区三区视频,日本理论片一区二区三区,91久久国产综合久久久,日本色网视频在线观看

FAQ
Why when the door closing the Magnetic Lock will make a loud voice?
4 years ago157 Clicks
Q: Why when the door closing the Magnetic Lock will make a loud voice?
A: (a)Check whether there has installed the Shock absorption gasket
     (b)Check the armature plate ,if the screw loose
     (c)check whether the distance between the main body of magnetic lock and armature plate is appropriate
 
Professional electric locks manufacturers-YLI ElecAll rights reserved,Email:yli@yli.cn
Login
Register