| Loại | Manufacturer |
|---|---|
| Trang web | https://www.grommesprecision.com/ |
| Số điện thoại | 1-800-746-2346 |
| Địa chỉ | 1331 Estes Avenue Gurnee, IL 60031 USA |
Grommes~Precision has been designing engineering and manufacturing quality sound equipment in the United States since it started operation in March of 1946.