Cov Khaub Ncaws Pob Khoom Siv Pov Tseg

Kev piav txog

1. Peb cov khaub ncaws hnav pov tseg yog tsim los ntawm kev ua kom zoo {1}}} ply cov nqaij, uas ntxiv rau kev ua tau zoo dua.

2. Cov xuab zeb tawg, nrog rau pem hauv ntej lossis rov qab qhib, ua kom muaj kev nplij siab siab thiab yooj yim ntawm kev siv.

3. Txhua lub tsho tshaj sab los nrog poly lub duav ties uas ncab mus rau qhov ntev xav tau, ua kom zoo tshaj plaws haum txhua lub sijhawm.

4. Cov khaub ncaws no muaj lub zog ntseeg tau meej meej, kev pab cuam, thiab opacity, muab kev tiv thaiv zoo rau cov kua thiab paug.

5. Zoo meej rau kev kuaj mob txhua hnub

Cim npe nrov: Cov Khoom Siv Cov Ntawv Cim Pov Tseg, Tuam Tshoj Cov Ntaub Ntawv Pov Tseg Khoom Siv, Cov Chaw Muag Khoom