Rau SMT pawg thawj coj saib, tshwj xeeb tshaj yog rau BGA thiab IC muab tso rau ntawm qhov yuav tsum tau ua yuav tsum tau muab tshem tawm, lub qhov ntsaws qhov convex concave ntxiv lossis rho tawm 1 mil, tsis tuaj yeem muaj qhov taw qhia qhov ntug ntawm lub tin liab, qhia qhov yog Tibetan hlaws, thiaj li ua tau raws li Cov neeg siv khoom xav tau, ua cov txheej txheem ntsaws qhov yog multif ...
Nyeem ntxiv