Who do i contact if i have any difficulties with decco? If you experience any difficulties please contact your local Decco branch. Serving three distinct markets, high street retailers, garden centres and building and engineering companies we operate from fifteen strategic locations around the country.What is decco? The DECCO ® trademark quickly became recognized as the representative for high-quality industrial grade solenoids and state-of-the-art coil technology. The company developed into an international supplier of laminated solenoids with a subsidiary in the United Kingdom and manufacturing facilities in Michigan.What is the phone number for decomatters? Our telephone number is: 01213 680218. Please note our phone lines are most likely to be busy at all time. The quickest way to contact us is via Live Chat. Copyright © 2013-present DecoMatters. All rights reserved.Why choose ross decco? ROSS DECCO ® is now a leader in industrial solenoid technology serving worldwide customers and providing solutions in a broad range of applications. For added flexibility, ROSS DECCO ® also offers custom design services to address complex system issues across many different industries.