Qhov teeb meem ntawm stamping qhov tshwj xeeb loj qhov yuav tsum tau them nyiaj rau
(1) thov siv lub punch tshwj xeeb los ntaus cov qhov ntawm qhov kev qhia yam tsawg kawg nkaus ntawm ob qho tib si.
(2) rau cov phom hnyav, siv lub qhov tuag loj tshaj qhov chaw ua hauj lwm. Tshaj tawm: ntawm qhov no, yog qhov loj me ntawm lub pwm siv, nws yuav ua kev puas tsuaj rau cov punch threads.
(3) qhov sib txawv ntawm qhov dav tsawg mus ntev yuav tsum tsis pub tsawg dua 1:10.
(4) txoj kev sib raug zoo ntawm qhov tsawg kawg nkaus ntawm kev txiav cov yas thiab phaj thickness.Nws yog pom zoo tias qhov tsawg kawg ntawm qhov kev txiav ntawm lub punch yuav tsum yog ob zaug lub thickness ntawm lub phaj