1.} ntsia hlau hnav
Vim li cas: Cov impetities nyuaj yog muab sib xyaw rau hauv cov khoom, cov ntsia hlau thiab lub taub hau yog ua los ntawm cov ntaub ntawv tsis zoo, thiab siv ntev ua rau hnav.
Kev daws: Ntxuav cov khoom tsis tu ncua kom ntseeg tau tias tsis muaj qhov cuam tshuam hauv; Siv cov ntsia hlau zoo thiab cov ntoo txaws; Nquag kuaj thiab hloov cov khoom siv tsis tu ncua .
2. Tsis muaj me me yaj ntawm cov ntaub ntawv
Vim li cas: tsis ua hauj lwm ntawm cov khoom siv cua kub, kev teeb tsa tsis raug ntawm cov ntsia hlau ceev, thiab sib xyaw tsis sib xyaw ntawm cov ntaub ntawv .
Daws: Tshawb xyuas cov khoom siv cua sov kom ntseeg tau tias qhov ntsuas kub thiab txias; Kho cov ntsia hlau ceev kom ntseeg tau tias cov khoom siv tau tag nrho; ua ntej sib tov cov ntaub ntawv ua ntej extrusion .
3.} pluag moulding
Vim li cas: tsis tsim nyog pwm tsim, cov khoom siv tsis raug kub lossis tswj siab lub siab, thiab cua txias zog {}}
Kev daws: Ua kom zoo tuaj pwm tsim kom ntseeg tau tias cov pwm sib phim cov khoom lag luam; Raug tswj cov khoom kub thiab siab; Txheeb xyuas lub tshuab cua txias kom ua kom zoo txias .
