California
| Company | Category | Area | Address | Web | Contact person | |
| SHAMROCK UTILITIES LLC | Mfg Transformers | California | 22759 SERENITY LN, PALO CEDRO, Shasta, California, 96073-8777, USA | - | - | Janet Edwards |
| SHAMROCK WINDOWS & DOORS | Door,Window Products | California | 23621 LA PALMA AVE STE F, YORBA LINDA, Orange, California, 92887-5536, USA | - | - | DAN GAGAN |