Cov txheej txheem hlau no ib qho 387 muaj nyob rau hauv ntau hom ntawv, gaskets, cov paib, cov paib, cov paib, cov paib, cov paib, xaim, thickinges, ntim thiab duab. Cov coloy cov hlau no tseem tsim nyog rau kev siv tshuaj siv xws li zirconium, titanium, txhuas, poron, vanadium, npib tsib xee thiab nitrogen.