Ob peb kauj ruam los ua haujlwm kab rov tav txhaj tshuaj molding tshuab

{{01. Kev Npaj: Tso qhov yuav tsum tau ntim cov khoom siv yas, thiab nruab qhov kev txhaj tshuaj mould rau hauv lub tshuab .

2. pib txhaj tshuaj molding rau hauv cov pwm, thiab cov pwm tuaj yeem nqa tawm cov khoom siv yas tom qab txias txias.

3.}}}} х molding tshuab, nws yog qhov tsim nyog los soj ntsuam nrawm, nws yog ib qho tsim nyog los soj ntsuam nrawm nrawm, nws yog qhov tsim nyog los soj ntsuam kev tawm tsam thiab kho kom haum thiab kho {2}.

4.} xov ua hauj lwm: Tom qab txhaj tshuaj molding ua tiav, lub tshuab yuav tsum tau ntxuav thiab cov khoom siv yas tsis tau khaws cia .