Service and Supplier Companies The service and support capacity of Nogales is quite limited. Most maquilas has retained their service channel and suppliers from Phoenix or Tucson. The Nogales maquilas also rely upon Sierra Vista - based distributorships of border wide companies. Two tool and die shops are present, metal stamping can be obtained from existing machine shops, and electrical components could be obtained through air freight of trucking and warehousing. Lack of plastic injection and circuit board manufacturers would inhibit electronic operations.