Our products has CSA certificate , they are popular not only the superior quality but also the reasonable price , delivery time spark electrodes,flame sensors,spark plug Material For Choice: Ceramic Insulator Body: 95% Alumina, Steatite with glazed or no glazed layer Electrode Pin/Rod: OCR25, OCR27, SUS304, Ni80Cr20, Kanthal D, etc. Bracket: Steel-Nickel Plated, Steel-ZINC Plated, Steel- Copper ...