Kev luam ntawv yog ib lub tshuab uas hloov tus cwj mem mus rau saum npoo ntawm daim ntawv, textiles, plastics, tawv, PVC, PC thiab lwm yam ntaub ntawv los ntawm kev ua phaj, inking, pressurization thiab lwm yam ntawv sau xws li ntawv, duab, duab, thiab kev tiv thaiv kev luam ntawv, thiab tom qab ntawd luam cov ntsiab lus ntawm manuscr ...
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