E-6 is the reversal process for color slide (transparency) film such as Fujichrome and Ektachrome. It requires dedicated chemistry and tight temperature control, so fewer labs offer it than C-41.
6 labs
4-1-39 Fukadachō, Nada Ward, Kobe, Hyogo 657-0038, Japan
Aeon James Yama 1F, 7-7-1 Aoyamadai, Tarumi-ku, Kobe, Hyogo 655-0873, Japan
3-chōme 29-1, Arino Nakamachi, Kita Ward, Kobe, Hyogo 651-1313, Japan
123 1-chōme-5-1 Moriminamimachi, Higashinada Ward, Kobe, Hyogo 658-0011, Japan
1-7-2 Sannomiyachō, Chūō Ward, Kobe, Hyogo 650-0021, Japan
1-10-1 Sannomiyachō, Chuo Ward, Kobe, Hyogo 650-0021, Japan