Qingdao Ohsung Chaw Sau Ntawv Co., Ltd. tau tsim nyob rau hauv 2005, txij li thawj hnub ntawm peb tsim peb lub hom phiaj tau muab peb cov neeg muas zaub zoo siab pom kev sib txuas lus khoom.Tam sim no peb cov khoom lag luam npog: whiteboards, cov ntawv xov xwm, mobile whiteboards, flipchart thiab ntau yam khoom siv hauv tsev, xws li daim ntawv qhia hnub qhuav qhuav (cov phiaj xwm txhua lub lim tiam / hli), corkboards thiab cov duab thav ntawv thiab lwm yam. Peb cov khoom siv dav siv hauv tsev kawm ntawv, chaw ua haujlwm. nrog rau ntau qhov chaw pej xeem thoob ntiaj teb.