Cov kev siv ntawm ferrous sulphate

Cov teb ua liaj ua teb twg feem ntau siv ferrous sulfate? Ob qho tib si ferrous sulphate mono thiab ferrous sulphate heptahydrate siv tau ua chiv lossis tshuaj tua kab. Ua tshuaj tua kab, lawv tuaj yeem tiv thaiv thiab tswj cov kab mob, xws li cov nplej smut...