Xim coated board yog ib lub tsev ntsuab thiab ib puag ncig tus phooj ywg. Yuav ua li cas xaiv nws kom raug, siv nws tsim nyog, thiab txhim kho nws txoj kev pab cuam lub neej yog qhov teeb meem tseem ceeb tshaj plaws rau cov tswv thiab cov neeg tsim vaj tsev engineering. Baosteel, raws li ib tug tag nrho cov txheej txheem steel cog, muaj kev nplua nuj nyob rau hauv ntau lawm ...
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