These can include various health and safety, environmental and industry-specific regulatory requirements relevant to the goods, services or works.
Gall y rhain gynnwys gofynion rheoliadol amrywiol ym maes iechyd a diogelwch, yr amgylchedd neu ddiwydiant penodol sy'n berthnasol i'r nwyddau, y gwasanaethau neu'r gwaith.