Cheadsity-ka sare ee dahaarka caagga ah Imtixaanada garoonka ayaa muujinaya in 10 kg ubax laga soo dhacayo dhererkiisu yahay 3 m, dahaarka kaliya waxay soo saartaa cilad-joojin isla markiiba iyada oo aan la gaarin dhaawac joogto ah. Isla mar ahaantaana, maaddadu waxay leedahay iska caabbinta aashitada ee aashitada ee aashitada iyo alkali ah, oo ay kujirto sturry aashitada ( ph2 ~ 4), iyo wasakhda alkaline-ka ee wasakhda ah (ph 10 ~ 12). Nidaamka qashinka ee dhirta ee qashinka, nolosha adeegga ee tuubbada birta ee 'DN300' oo lagu fidiyo 5 sano ka dib markii lagu beddelay tuubooyinka birta ee birta ah, yareynta kharashka dhameystiran 60%.
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