Os nad yw busnesau wedi cofrestru gyda'u hawdurdodau lleol ers y cyfnod atal byr ym mis Hydref, dylent droi atwefan Busnes Cymrui gael rhagor o wybodaeth am wneud hynny.
Businesses who have not registered with their local authorities since the firebreak in October should visit theBusiness Wales websitefor more information on doing so.