Goddefgarwch pŵer cadarnhaol o 0 ~ + 3%
IEC61215(2016), IEC61730(2016)
ISO9001: 2015: System Rheoli Ansawdd
ISO14001:2015: System Rheoli'r Amgylchedd
ISO45001: 2018: Systemau rheoli iechyd a diogelwch galwedigaethol