Glass fiber idabadwa m'ma 1930s.Ndi mtundu wa zinthu zopanda zitsulo zopangidwa ndi pyrophyllite, mchenga wa quartz, miyala yamchere, dolomite, calcite, brucite, boric acid, phulusa la soda ndi zinthu zina zopangira mankhwala.Ili ndi kulemera kopepuka, mphamvu yayikulu, kukana kutentha kwambiri komanso kutsika, corrosio ...
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