F46/F4/PFA/PTFE四氟管特氟龙,四氟板,四氟垫圈,各种彩色毛细管PTFE is either synthesized by the emulsion polymerization of tetrafluoroethylene monomer under pressure, using free-radical catalysts or it may be produced by the direct substitution of hydrogen atoms on polyethylene with fluorine, using polyethylene and fluorine gas at 20 °C
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