隐藏式闭门器
可承受门重40-65KG
双段调速调节阀,关门调节阀,闭门调节阀
尺寸:230*55*32(mm)
conclead door closer
suit for door weight 40-65KG
two speed adjusting valve close speed valve latch speed valve
soze:230*55*32 mm