Waqtigan xaadirka ah, iyada oo kala duwanaanta alaabta, NA2S waxaa si ballaaran loo isticmaalaa dhammaan qaybaha nolosha, hadda inta badan suuqa waa xaashi adag oo sodium sulfide 50-60% ma fududa in la kaydiyo, lagu kala diro xal madow, oo ay ku jiraan wasakh. gacan-ku-gudbinta ma aha mid caadi ah oo...
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