Un cwmni sydd wedi ymrwymo i’r adduned Amser i Newid Cymru yw cwmni Safety Letterbox Company Ltd yng Nghastell Nedd, sy’n cyflogi 60 o bobl o’r ardal leol.
One company who has taken the Time to Change Wales pledge is Safety Letterbox Company Ltd based in Neath, who employ 60 people from the local area.