... , auto-control system, automobile industry, petrochemical industry. Thermal Expansion WaxAutomatic Temperature Regulating Agent Low Temperature SeriesModel NumberAppearance( ... AlkaliMechanical ImpurityA-20Powder, Cream-20/-105Non.Non.A-20-1Powder, Cream-20/-89Non.Non.A-15Powder, Cream-15/-58Non.Non.A ... -10Powder, Cream-10/23Non.Non.A ...