The Screen of Most Cost-Effective-COG and COF, which One Worth To Get？ 

Why do most people on the market prefer the screen of the COF scheme?
How do we distinguish when purchasing screens face the situations of using COG to pretend to be COF in the market ?
This video is the popularization of screen expertise, introduces COG and COF scheme in details. Be careful, it may overturn your previous cognition.#screen #2022 #marketanalysis #using #cheap #tft #konwledge