J-one Co., LTD.
Jewelry OEM. 100 years of traditional skills.
A jewelry manufacturer with three workshops in Minato-ku, Tokyo, Kofu City, Yamanashi Prefecture, and Thailand.
The company manufactures high quality jewelry using traditional techniques that have been in business for 100 years.
Integrated in-house production from product development to mass production from casting to finishing.
Features include direct purchase of diamonds by professional staff.
J-one Co., LTD. - Company profile
| Company | J-one Co., LTD. |
|---|---|
| Address | 2-18-12 Aioi, Kofu City, Yamanashi |
| URL | https://j-one-net.com/ |