1.Good quality 2.Aesthetic fashion 3.Simple and efficient to operate 4.Without power Scopeof Application: 1.bank,churches,bookstores,office buildings,hospitals,telecom company;2.hotels,guesthouses,commercial buildings,schools,supermarkets;3.government agencies,research institutes,galleries,theaters,museums.Quality:(1)Easy to operateAesthetic fashion.Simple and efficient to operate without power, ...