Kev ua lag luam melamine ua haujlwm tas li.

Cov chaw tsim khoom feem ntau yog ua cov xaj uas tseem tab tom tos, thiab tag nrho cov khoom muag tsis ntau. Tsis muaj kev hloov pauv tseem ceeb hauv kev lag luam downstream, nrog rau kev ua tau zoo tsis tshua muaj zog thiab kev loj hlob ntawm kev thov tsawg.

Feem ntau ntawm lawv tseem xav tau ntxiv cov khoom muag thiab feem ntau tos kev ua lag luam yav tom ntej.

Tam sim no, cov khoom siv urea hloov pauv me ntsis, thiab qhov cuam tshuam ntawm kev txhawb nqa tus nqi tseem muaj. Tsis tas li ntawd, kev thauj mus los hauv zos tsis yooj yim, ua rau kev ua lag luam ua haujlwm ntawm tus nqi siab.

Yog tias koj xav tau cov ntaub ntawv ntxiv, thov xa email rau kuv.
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