Muab cov Mica
Cov Ntu Loj: 1-8mesh 6-10mesh 10-20mesh 40mesh 60mesh 100mesh 150mesh.etc Xim: ci ntsa iab zoo li xim. Daim ntawv thov: kho kom zoo nkauj, cov ntaub ntawv vuam tshwj xeeb,
tsev cov ntaub ntawv thiab hluav taws xob rwb thaiv tsev.