Byddan nhw’n adeiladu ar y gwelliant anferth a welwyd mewn cyfraddau ailgylchu yng Nghymru, diolch i fuddsoddi gwerth £1 biliwn gan Lywodraeth Cymru ers datganoli.
They will build on the vast improvements Wales has seen in recycling rates thanks to Welsh Government investment of £1bn since devolution.