Tom qab txiav rau hauv ib lub yeeb nkab steel, txhua batch ntawm cov yeeb nkab steel yog raug rau kev soj ntsuam nruj nruj, xyuas cov khoom siv ntawm cov vuam, cov tshuaj muaj pes tsawg leeg, lub xeev ntawm fusion, qhov zoo ntawm cov yeeb nkab steel thiab cov khoom tsis yog. kev soj ntsuam kev puas tsuaj, kom ntseeg tau tias cov txheej txheem ua yeeb nkab tsim nyog ua ntej kev tsim khoom.
