Saib cov txheej txheem kho deg ntawm lub qhov rooj
Cov txheej txheem kho deg ntawm kev ua lag luam yog tsuas yog muab faib ua ob pawg:
1. Daim duab ua yeeb yaj kiab: Qhov saum npoo ntawm cov phaj steel yog muab tso nrog imitation ntoo grain (piv txwv li, compound yas). Cov txheej txheem ntau lawm yog cov khoom siv PVC yog cov cua sov-sib khi thiab muab tso rau ntawm cov phaj steel. Thaum siv cov khoom lag luam zoo li no, vim muaj kev hloov pauv ntawm cov khaub thuas thiab tshav kub, thiab kev nqa cov khoom noj qab haus, thiab tom qab khawb saum npoo nrog cov khoom ntse yog qhov loj;
2. Hloov cov xim ci ua cov txheej txheem: lub phaj steel tau kho nrog phosphating tov; Hauv qab npoo ntawm cov hlau phaj yog txau thiab ci mus rau tshav kub hloov cov kab ntoo rau cov xim hauv qab ntawm cov hlau phaj; ci ci; Lub voj voog adopts lub tsheb xim txheej txheem. Kev ua tau zoo yog qhov ruaj khov.
