Kev ua lag luam melamine ua haujlwm tas li.

Cov chaw tsim khoom tseem muab qhov tseem ceeb rau kev ua tiav cov xaj uas tseem tab tom tos, nrog rau kev nyuaj me ntsis rau kev tsim khoom, kev muag khoom, thiab cov khoom muag, ua rau muaj kev tsis txaus ntawm cov khoom hauv qee thaj chaw.

Tam sim no, qhov tsis muaj zog ntawm cov khoom siv raw urea tseem txuas ntxiv mus, thiab qhov kev txhawb nqa ntxiv tsis muaj zog, uas muaj qee qhov cuam tshuam tsis zoo rau lub siab ntawm kev lag luam.

Txawm li cas los xij, nws nyuaj rau ua tiav kev txhim kho tseem ceeb hauv kev lag luam downstream.

Tam sim no, cov neeg siv khoom tab tom yuav khoom kom zoo, ntxiv cov khoom muag raws li qhov xav tau, thiab saib xyuas kev ua lag luam yav tom ntej.