C-41 is the standard chromogenic process for color negative film such as Kodak Gold, Portra, and Fujicolor. Chemistry runs at about 38°C on minilab machines such as Noritsu or Fuji Frontier. Typical turnaround is a few days to a week depending on the lab.
3 labs
9-24 Takadachō, Yamatokoriyama, Nara 639-1132, Japan
5 Kangokuchō, Takamachō, Nara, Nara 630-8242, 630-8421, Japan
16-13 Sanjōhinokimachi, Nara 630-8124, Japan