Lub ntiaj teb thawj cov kua qaub pickling galvanized aluminium-magnesium chav tsev tau ua tiav kub-kuaj ntawm Hebei Taihang Hlau thiab Hlau.
Tsis ntev los no, lub ntiaj teb no pioneering acid pickling galvanized txhuas-magnesium chav tsev, cog lus los ntawm MCC Southern
saib kom meej