أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
A cradle on the top of the building which is usually controlled by electronics controller to shift from one side of the building to other side. some of it can be controlled sideways up and down or back and fort. This is very useful equipments to maintain the outside of high rise building like windows cleaning, and PPM for external signage and facade lightings.
