Welsh businesses, which had made improvements to their own carbon footprint shared their experiences and best practice with those starting their sustainability journey.
Bu busnesau yng Nghymru a oedd wedi gwneud gwelliannau i’w hôl troed carbon eu hunain yn rhannu eu profiadau a’u harferion gorau gyda’r rhai a oedd ar ddechrau eu taith gynaliadwyedd.