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Sodium metabisulphite Factory supplySodium metabisulfiteMolecular formula : Na2S2O5 Molecular weight : 190.10 Appearance : white or light yellow crystalline powder , relative density is
Supply ThioureaI. Description of the ProductThiourea (also called Thiocarbamide or Sulfourea) is the diamide of thiocarbonic acid thatresembles urea but contains su
school chalkWe are a chalk maker located in Hubei province China. We produce and supply all kind of school chalk,dustless chalkwith a very high quality under the
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