Cov yeeb nkab muaj peb txheej PE antisepsis qauv: thawj txheej nrog epoxy hmoov (FBE> 100um), txheej thib ob nrog cov nplaum (AD), 170 ~ 250um, txheej thib peb nrog polyethylene (PE) 2.5 ~ 3.7mm.kev koom ua ke ntawm lawv thiab cov yeeb nkab steel hlau ua rau cov txheej txheem zoo.Txoj kab uas hla 60mm-1420mm, w...
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