Hlau hlau Hoobkas nyob rau hauv zus tau tej cov hlau hlau, feem ntau yog siv cov pa roj carbon steel los yog stainless hlau, feem ntau yog tom qab phaj plhaub, pickling, ntxuav, saponification, ziab, kos duab, annealing, txias, pickling, ntxuav, galvanized kab, ntim thiab lwm yam txheej txheem, los tsim hlau ingot ua kuv ...
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