Lub cev pob txha ntawm lub tshuab luam ntawv plywood yog welded nrog square steel nrog lub thickness ntawm 5 hli, thiab cov txheej txheem txais 600 degree high-temperature quenching rau ntau tshaj 8 teev. Nws yog nruab nrog 24 cov ntsiab lus txhawb nqa, uas tsis tsuas yog ua kom qhov tseeb ntawm cov pob txha pob txha, tab sis kuj tseem txhim kho lub neej zoo heev (cov txheej txheem tuaj yeem sib txawv los ntawm kev khob. Yog hais tias lub suab yog nkig, qhov hluav taws kub tsis tau thim rov qab, thiab yog hais tias lub suab nrov. hnyav, hluav taws tau rov qab.).
