Cov hnab looj tes paj rwb tau dav siv rau txhua yam khoom siv tiv thaiv kev ua haujlwm, xws li cov chaw tsim kho, kev ua haujlwm niaj hnub, kev cob qhia electroplating, hlau stamping, yas factories, tshuaj nroj tsuag, steel manufacturing, shipyards, hluav taws xob factories, ntim khoom factories, luam ntawv lag luam, hluav taws xob engineering, machinery manufacturing, tsev noj mov thiab canteens, thiab feem ntau ntawm cov chaw ua hauj lwm.
Tus naj npawb ntawm stitches: nyob rau hauv qee qhov chaw, qhov luaj li cas ntawm cov hnab looj tes thiab lub thickness ntawm cov ntiv tes yuav tsum tau hnav nrog cov khaubncaws sab nraud povtseg ntxiv. Qhov no yog tus naj npawb ntawm stitches. Tus naj npawb ntawm cov koob ntawm cov hnab looj tes paj rwb txiav txim siab siv. Piv txwv li, 7 koob txhais tau tias tus naj npawb ntawm koob ib nti ntawm lub loom. 7 koob=7 koob ib nti. Piv nrog 13 koob, 7 koob yog tuab thiab 13 koob yog nyias.
Gram: ib lub sij hawm tshwj xeeb hauv kev lag luam hnab looj tes. Qhov hnyav ntawm cov hnab looj tes yog tswj tau nyob rau hauv ib qho chaw. Txhua 10 lossis 20 khub yog ib pob, thiab qhov hnyav ntawm txhua pob yog cov xov paj noj. Muaj 450 g, 500 g, 550 g, 600 g, 700 g, 800 g thiab lwm yam hnyav.
