Box build production in high quality plant in Bulgaria

Electronics Company articlesSouth-East European INDUSTRIAL Мarket - issue 4/2020 • 23.10.2020


Security Smart Systems (3S) is one of the top Bulgarian EMS companies successfully growing for more than 25 years. Manufacturing a wide range of industrial electronics and box build solutions is the drivetrain of the firm. The company has successful returns of electromechanical projects to European manufacture from the Far East. Especially now with the latest concerns for China’s surveillance, tracking and intellectual data abuse, more companies have started project transfers to CEE. In Q1 2020 Security Smart Systems won a benchmark for a project transfer against Mexico, Latvia and Romania. One of the pillars was the strict quality requirements that are followed thanks to the certification of ISO 9001, 14001, 45 001 and following IPC standards.

   The products have possibility for full traceability in all departments.

  • The electronics department has 2 latest generation fully automatic SMD lines with inline 3D AOI and 2 prototype SMD lines, 20 trained through hole operators, multiple testing and software loading stations and final assembly with packing. It is suitable for box build and customization of products.
  • The metal department has the full metal sheet process for mass production – 3 CNC punch presses, 2 CNC deburring machines, 3 CNC press brakes, spot welding, argon welding and powder coating. It is suitable for smaller and bigger metal housings and smaller parts.
  • The plastics department is running on 14 CNC machines with clamping force from 30 to 650 t with volume of over 180 t processed technical plastics annually.
  • The cable department has been manufacturing harnesses for the electronics industry over the last 20 years. In the last 5 years 2 double sided crimping robots have been added – one up to AWG14 (2,5 mm2) and the second for precise small cables starting from AWG28 (0,08 mm2) with length from 40 mm. There is a wide range of crimping tools available. Quality is being guaranteed by an automatic connectivity tester and a pull tester. In addition to the very high quality, thanks to high-performance robots 3S can also offer extremely competitive prices for cable bundles made of cables from leading European manufacturers.
  • The battery packs department manufactures small and medium battery packs for IoT, medical and industrial applications.
  • Special processes – Clean room class 7 designed for medical and other electronic equipment. Laser marking with QR code and inscription on plastic boxes – 2 lasers. Selective coating with 3 heads – spray, needle and gel. Pad printing.

All of this is backed by professional contacts speaking English and Russian, supporting customers from the project draft through production to logistics and after-sales service.




3, Ilinden Street
3000 Vratsa
Тel: +359 92 669 580
Fax: +359 92 653 115


Rommtech 3S 2019