● SESIWN ARBENNIG O BIBELL DUR DUR
● CYFLWYNIAD CYNNYRCH, PROSES, SICRHAU ANSAWDD, SENARIOS CAIS, DOSBARTHU FARCHNAD, ACHOSION CWSMER, GWYBODAETH CYSWLLT
● AMSER DARLLEDIAD BYW:
2021.9.1 prynhawn 3:00-5:00 3:00-5:00 pm ar 1 Medi, 2021
CYSYLLTIAD YSTAFELL FYW
Facebook:https://www.facebook.com/Tianjin-Yuantai-Derun-steel-109782188008237Youtube:https://www.youtube.com/channel/UCbucOwXhsWCtfEOfOsA6NaQ