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18952973080In the process of producing electric heating pipe, blackening treatment is sometimes used. Heat treatment is a process of heat treatment of metal obje
More1. The components are allowed to work under the following conditions: a. the relative humidity of air is not more than 95%, and there is no explosive
MoreFinned electric heating tubeFinned electric heating tube is a kind of heat energy which is converted from electric energy to heat the material to be h
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