Pakali pano, ndi mitundu yosiyanasiyana ya mankhwala, NA2S chimagwiritsidwa ntchito m'madera onse a moyo, tsopano ambiri msika ndi olimba pepala la sodium sulfide 50-60% si kophweka kusunga, kusungunuka mu njira wakuda, munali zonyansa, kuperekera pamanja sikuli kokhazikika komanso ...
Werengani zambiri