Ho hlapa letsatsing ho etsa hore re futhumale ebile re phetse hantle.
Re lutse ka ofising e pharalletseng 'me re utloa khanya ea letsatsi e ncha le e khanyang e feta ka khalase, re qala letsatsi le phathahaneng le le behang litholoana.Ha ho hlokahale hore u tšoenyehe ka mocheso le tšenyo ea letsatsi, hobane lesela la rolara le hlahisoa ke Groupeve Company, e ke keng ea thibela feela leseli le matla le mahlaseli a ultraviolet empa hape e ka fetisa leseli, ventilate, mocheso-insulate, boloka sebaka le ho hloekisa habonolo, ke ka hona re ka natefeloang ke pono e sa sitisoeng le khanya ea letsatsi e ntle hohle ka ofising.
Ka mor'a Ntoa ea II ea Lefatše, ho futhumatsa, moea o kenang moea, mabone a fluorescent, lisiling tse kopantsoeng li ile tsa tsebahala mehahong, empa mehaho ena e ile ea ama mabone a tlhaho, kahoo mehaho ea liofisi e entsoeng ka khalase e ile ea hlaha lilemong tsa bo-1950.Ba fane ka pono e pharaletseng ntle le tšitiso, e leng se ileng sa khothalletsa ntlafatso ea liofisi tsa naha ka bo-1960.Ka 1958, Mies le Johnson ba ile ba qapa Mohaho oa Seagram oa mekato e 38 oa New York Seagram o nang le mabota a likharetene tsa khalase, ho tloha ka nako eo, mehaho e haheletsoeng ka khalase e ’nile ea phahama lefatšeng lohle.Li-Roller Blinds tse ka eketsang khanya e sebetsang le ho thibela mahlaseli a ultraviolet li fetohile tse lebisang tlhokomelo.
Monghali HEHJ oa Groupeve o batlile le ho hlahloba mefuta eohle ea lihlahisoa tsa sunshade lefatšeng ka bophara, qetellong o ile a fumana lesela lena le finyellang litekanyetso tsohle tsa hae tse thata.Ka 2001, Groupeve e ile ea kenya thepa ea thepa ea Teslin, theknoloji e ikhethang ea Telewala e etsa hore sehlahisoa se be le melemo e mengata, ho bolela tse seng kae, bophelo ba nako e telele ea tšebeletso, ho hloekisa habonolo, phetisetso e phahameng le mefuta e mengata ea likhetho tsa bophara.Baetsi ba likharetene kapa li-roller blinds ba ka khetha bophara ho tloha ho 1.83m / 2m / 2.5m / 3m, e ka fokotsang litšila le ho boloka litšenyehelo.Taolo e tiileng ea boleng e etsa hore lihlahisoa tsa Groupeve li fihlelle sekhahla sa ts'ebeliso ea 98%, ho qoba lesela la litšila ka lebaka la mefokolo.
Qalong, lesela le entsoe ka fiberglass le PVC, ka mor'a lilemo tse tharo tsa lipatlisiso;Groupeve e sebelisitse polyester ho nkela fiber ea khalase sebaka ho fumana sehlahisoa se secha, se nang le ts'ebetso e ntle le litšenyehelo tse tlase.E ile ea amoheloa ka potlako ke 'maraka oa lefatše lohle.
Hona joale, Groupeve e se e hlahisitse mefuta e fetang 2000 ea masela a rolara blinds, a romelloang linaheng tse 82 ho pota lefatše.Mehaho e mengata ea liofisi tsa khalase e khethile lihlahisoa tsa Groupeve.
Rata 'me u natefeloe ke khanya ea letsatsi e tsoang lihlahisoa tsa Groupeve.