We are Profma International Co., Ltd based in Mianyang , China. We are member of Tradekey.com since October, 2008. Our business is related to Electrical & Electronics Supplies industry and we specifically deal in polyimide film / Kapton / Ferrite core. Please find our product details below: Ferrite core --Ferrite Toroid（FerriteNiZn Ferrite ToroidNiZn MagnetBig Ferrite Magnet CoreFerrite discsFerrite rod etc)is a high performance and super stable big size ferrite Toroids for various accelerators And by now we are the only mfr of size over OD600mm in whole piece. ----This ferrite Toroid is regularly adopted in physics research, electronics, Mechanical, airspace, power supply, communications and different high frequency, high pulse equipments. polyimide film / Kapton film ---Polyimide film（KaptonKapton filmPolyimide tapeKapton tapePolyimide FEP filmKapton FEP film etc）is by now the best high temperature insulation plastic film with the best applicable properties. This film bears extreme high and extreme low temperature(-269 to +260C) with little change in properties of electrical insulation, anti chemical and anti radiation. ---Polyimide film is widely used in various harsh environment of various motors, high temperature wires & cables, nuclear equipments, adhesive tapes, substrate of FPC and protective. Ferrite core --Ferrite Toroid（FerriteNiZn Ferrite ToroidNiZn MagnetBig Ferrite Magnet CoreFerrite discsFerrite rod etc)is a high performance and super stable big size ferrite Toroids for various accelerators And by now we are the only mfr of size over OD600mm in whole piece. ----This ferrite Toroid is regularly adopted in physics research, electronics, Mechanical, airspace, power supply, communications and different high frequency, high pulse equipments. polyimide film / Kapton film ---Polyimide film（KaptonKapton filmPolyimide tapeKapton tapePolyimide FEP filmKapton FEP film etc）is by now the best high temperature insulation plastic film with the best applicable properties. This film bears extreme high and extreme low temperature(-269 to +260C) with little change in properties of electrical insulation, anti chemical and anti radiation. ---Polyimide film is widely used in various harsh environment of various motors, high temperature wires & cables, nuclear equipments, adhesive tapes, substrate of FPC and protective. Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.