(1) Thaum stacking, galvanized steel kav yuav tsum tsis pub dawb los ntawm condensed dej thiab residual cua sov ntawm lawv qhov chaw;
(2) Lub tsev khaws khoom yuav tsum tswj cov huab cua zoo, thiab cov dej noo hauv huab cua yuav tsum tsis txhob nyob hauv thaj tsam ntawm 60 txog 95%;
(3) Tsis txhob muab tso rau hauv qhov chaw uas muaj cov pa phem thiab plua plav;
(4) Siv roj, ua kev kho mob passivation, lossis siv cov txheej txheem organic rau saum npoo ntawm txheej galvanized.
