Raws li lub caij nplooj ntoos hlav kev ua koob tsheej kos duab ze, feem ntau cov vev xaib feem ntau yuav nres thiab pib pib hnub so ntawm lub lim tiam no.Tab sis txhob txhawj, raws li
Kev xa khoom thiab Hoobkas, peb cov neeg sau ntawv tseem online thiab muab tebthaum hnub so.Yog li nug rau TCCA,
Yeeb yam,Calcium hypochlorite,PAC thiab lwm yam khoom,Pls xav tiv tauj peb txhua lub sijhawm.
