Stamping tuag, feem ntau tsuas yog hu ua "tuag," yog ib qho cuab yeej tshwj xeeb uas siv hauv kev tsim khoom, tshwj xeeb hauv kev ua haujlwm ntawm cov hlau thiab cov ntawv hlau fabrication.Nws yog siv los tsim, txiav, lossis ua cov ntawv hlau ua ntau yam duab thiab qhov ntau thiab tsawg.Stamping tuag yog ib qho ...
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