Jeins has agreements not only with health and consulting companies but also with lab-grown diamond companies.

Part 01 - Headquarters (en)

https://youtu.be/EI0ZfZzBzjU

Part 02 - Factory (en)

https://youtu.be/-nzRmkC1sxY

Part 03 - MOU (en)

https://youtu.be/pQZsEmL-2LM