Kev Piav Qhia Luv:

Cov khoom siv rwb thaiv tsev rau cov roj transformers immersed:
1) Cov ntoo laminated, pas nrig thiab cov khoom siv ua haujlwm
2) Transformer board thiab cov khoom rwb thaiv tsev
3) Cov ntawv corrugated, cov hlua khi lossis cov roj txias channel
4) Cov siv ntaub dawb siv hluav taws xob, E-iav siv, cov hlua khi
5) Cov ntawv pob zeb diamond, cov ntawv ua ntej impregnated, cov ntawv cable
6) Cov raj ntawv Phenolic, cov raj ntawv thiab cov raj ntawv crepe
7) Amorphous pob txha phenolic rods & ceev