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heating quartz tube 1.specification is OD10mm,power 300W, voltage 220V,Length 1000mm 2.type is two ends with magnetic or not, heating quartz tube1.transform in the invisible light,the energy made from which only heat the object direct around air.2.halogen is the main ingredient of heatiing tube3.dimensional tolerancePower(W)Voltage(V)Diameter(mm)Length(mm)Lifetime(h) ...