Vijtsam luam tawm dav siv. Txuas ntxiv rau dej thiab cua (suav nrog lwm yam kua thiab roj), txhua yam khoom siv tuaj yeem siv los ua cov roj tso hauv qab. Thaum ib tug neeg tawm tswv yim txog kev tshuaj ntsuam luam ntawv, nws tau hais ib zaug: yog tias koj xav pom txoj kev luam ntawv zoo tshaj plaws hauv ntiaj teb thiab ua tiav lub hom phiaj ntawm kev luam ntawv, nws yuav zoo li kev tshuaj ntsuam luam ntawv.
Tshwj xeeb, kev tshuaj ntsuam tshuab luam tawm yog feem ntau ua rau cov hauv qab no:
1Paper luam ntawv, kos duab kos duab - tshaj tawm, kos duab, daim ntawv qhia hnub, daim ntawv teeb duab, thiab lwm yam. Kev luam ntawv luam ntawv, hloov luam ntawv, ntim ntawv luam ntawv, ntawv luam ntawv, ntawv ua vaj tse, thiab lwm yam
2Qhov luam tawm yas zaj duab xis - cov khoom ua si yas, hnab tawv me, hnab yas, thiab lwm yam. Khoom seem - ntsuas qhov ntsuas.
3Cov khoom lag luam luam ntawv ntoo khaub ncaws - lacquerware, ntoo khoom siv tes ua, khoom ua si. Ua cov khoom tiav ib nrab - cov khoom siv kis las, ntoo, qab nthab, cov paib ntawm txoj kev, kos npe, ntawv hlau cuav, ntawv cim npe, thiab lwm yam.
4Metal cov khoom lag luam luam hlau kheej kheej, cov tais diav hlau, cov khoom siv hlau.
5Glass, cov khoom lag luam ceramic, luam tawm iav - tsom iav, khob iav, khob, fwj, etc. Ceramics - khoom siv, khoom siv tes ua.
6Label ntawv luam tawm, tus xov tooj, cov kab ntawv hloov.
7 Luam tawm hauv Circuit Court board, nplua pej xeem lossis chaw ua haujlwm substrate, tuab zaj duab xis integrated board pawg thawj coj saib, txias zaj duab xis lub teeb
8 Luam tawm thiab zas xim - chij, daim ntaub, phuam so, phuam so tes, tsho, tsho khuam, xaws khaub ncaws, thiab lwm yam Kev luam ntawv - hnab tshos, khau, naj npawb xov tooj, ntau lub hnab, hnab ev khoom, hnab tes, hnab ntawv, thiab lwm yam.
9 Luam tawm ntawm cov khoom lag luam tawv
