Kambani yeColku, fekitori ine mukurumbira ine ruzivo rwemakore anopfuura makumi matatu nemashanu mukugadzira mafiriji uye makore makumi maviri nemana ekushanda neOEM, yave ichishanda zvakanyanya muindasitiri iyi nezvigadzirwa zvayo zvitsva. Nemagadzirirwo akasiyana-siyana, mapatenti akawanda ezvigadzirwa, uye kutumira kunze kwenyika kunyika dzinopfuura makumi matatu, Colku yasimbisa chinzvimbo chayo semutungamiri munyaya dzemafiriji.