Hauj lwm lawm
Xa kev nug

- Nta
1. Mos siab lub teeb transmittance daim npog qhov ncauj lim tawm irritating lub teeb ruaj.
2. Corrosion kuj, lub teeb lub hauv paus, zoo cua sov dissipation, ruaj khov tam sim no thiab voltage, escort rau teeb Tsis muaj stroboscopic tshwm sim.
3. Batten teeb muaj zog heev. Lawv tawm ntau lub teeb thaum siv lub zog me me, ua rau lawv yog qhov zoo tshaj plaws teeb pom kev zoo rau cov neeg uas xav txuag cov nqi hluav taws xob.
- Paub meej ntxiv




- Daim ntawv thov

- Peb lub tuam txhab


