Yuav ua li cas daws qhov seem ntawm npoo thiab stain ntawm PP

1) Cov nplaim npoo ntawm cov pwm kab noj hniav ntau dhau, thiab cov huab cua tau khuam rau ntawm cov pwm uas du, uas ua rau cov khoom lag luam tsim tau chaw. Qhov saum npoo ntawm kab noj hniav yuav tsum tau muab xuab zeb, thiab lub tshuab nqus tsev ntxiv tuaj yeem txuas ntxiv.
(2) Kev khiav tawm tsis zoo. Cov qhov to yuav tsum tau ntxiv. Yog tias cov thiav tsuas yog tsim tawm hauv qee qhov, tshawb xyuas seb lub qhov cua tau txhaws lossis ntxiv qhov cua ntawm thaj chaw.
(3) Thaum cov ntawv ntim uas muaj cov kua tshuaj yas siv, cov yas ntim khoom rau ntawm cov pwm saum npoo los ua qhov chaw. Cov txheej txheem hauv qab no tuaj yeem siv los tshem tawm: siv cov pwm nrog ntsuas kub, thiab kho pwm pwm kom zoo.
Thaum cua sov ntawm daim ntawv, khaws cov pwm kom deb ntawm daim ntawv li ua tau.
Ua kom luv cua sov rau lub sijhawm.
Ntxuav cov pwm hauv lub sijhawm.
(4) Pwm kub dhau heev lossis dhau tsawg. Nws yuav tsum tau kho kom zoo. Yog tias pwm pwm kub dhau, qhov txias yuav tsum ntxiv dag zog kom txo cov pwm kub; yog tias pwm kub tsis dhau, pwm kub yuav tsum nce siab thiab tsim pwm yuav tsum muaj kab thaiv.
(5) Kev xaiv tsis zoo ntawm cov khoom siv pwm. Thaum ua cov ntawv pob tshab, tsis txhob siv phenolic cob los ua pwm, pwm pwm yuav tsum siv. (6) Pwm saum npoo yog qhov ntxhib heev. Qhov saum npoo ntawm cov kab noj hniav yuav tsum tau ua txhuam los txhim kho qhov chaw tiav.
(7) Yog hais tias saum npoo ntawm cov nplooj ntawv lossis pwm qhov kab noj hniav tsis huv, cov av ntawm qhov chaw ntawm nplooj ntawv lossis pwm kab noj hniav yuav tsum tau muab tshem tawm tag nrho.
(8) Muaj ntawv caws pliav rau saum npoo ntawm daim ntawv. Qhov saum npoo ntawm daim ntawv yuav tsum tau polished thiab daim ntawv yuav tsum khaws cia nrog cov ntawv xaj.
(9) Cov pa ya cov ntsiab lus nyob hauv cov chaw tsim khoom ib puag ncig yog siab dhau lawm. Ib puag ncig kev tsim khoom yuav tsum ua kom huv.
(10) Tsawg dhau los ua qhov hloov pwm. Yuav tsum nce ntxiv yam tsim nyog