C57300 Copper Ntawv

Cov nplooj ntawv tooj liab feem ntau muaj kev ua haujlwm ntev rau thickness, dav, thiab ntev. Cov kev zam no yuav txawv nyob ntawm cov chaw tsim khoom thiab cov kev cai tshwj xeeb ntawm daim ntawv.

Dab tsi yog qhov zoo ntawm koj lub tuam txhab?
A4: Peb muaj ntau tus kws tshaj lij, cov neeg ua haujlwm ua haujlwm, cov nqi sib tw ntau dua thiab zoo tshaj tom qab-dales

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