情報(日本語): https://dousen.org/

Feel free to talk in English.
Mainly producing (promoting): Uzuki Shimamura, Miho Kohinata, Kyoko Igarashi, Kanako Mimura, Noriko Shiina, Mio Honda, Miu Yaguchi, Kumiko Matsuyama

"Dousen" (導線) means "conductive wire".