Ntawv|OPP banding tshuab
1. Kub-melt daim kab xev khi, uas tuaj yeem siv los khi cov nqi;
2. Microelectronics hlau tswj, txhim khu kev qha kev ua tau zoo;
3. Photoelectric hloov tswj kev ua haujlwm, yooj yim thiab siv tau yooj yim;
4. Kev tuav thiab ua haujlwm tsis siv neeg, yooj yim rau kev khiav lag luam;
5. Lub zog nruj thiab txoj siv sia loj tuaj yeem kho tau raws li qhov xav tau sib txawv;
6. Lub tshuab tag nrho yog me me thiab zoo nkauj;
7. Ntau daim ntawv khi: ib leeg, ob npaug, hla, yooj yim rau kev khiav lag luam