What ZTA does

ZTA AD (Завод за Телефонна Апаратура АД, "Telephone Equipment Factory") is a Bulgarian joint-stock contract manufacturer founded in 1967 and headquartered in Bansko, Bulgaria. The company originally manufactured telephone exchanges for Bulgarian state telecommunications before pivoting in the 1990s to precision mechanical structures, electronics, and electro-mechanical assemblies following market liberalization. It operates an 18,000 sq m facility with 8,000 sq m of production space, employs 51–100 people, and holds ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications.

ZTA delivers three vertically integrated service lines from a single site: (1) Metalwork — laser cutting, punching, bending, robotic and laser welding, CNC 3/4-axis milling, and turning using Trumpf combined laser-punch machines, Yaskawa robotic welding cells, Bieller punching automation, and HAAS CNC equipment; (2) Finishing — electrostatic powder coating, wet painting, galvanic coatings (zinc, nickel, tin), anodizing, passivation, electropolishing, and sandblasting via an automated galvanic line, with materials sourced from AkzoNobel and TRIMITE; (3) Electronics, Testing and Assembly — SMD and through-hole PCB assembly, cable and harness production, end-node assembly, and temperature testing across -40°C to +80°C supported by an SMD pick-and-place line with inspection conveyor.

Commercially, ZTA operates as a B2B contract manufacturer selling one-time project-based manufacturing services under inquiry-driven, quote-based pricing with ex-works (EXW) delivery and 30-day payment terms. It serves enterprise OEMs across marine electronics (Sperry Marine / Northrop Grumman since 1998, Navico), medical devices (Ottobock), industrial automation (ABB), building systems (Dormakaba), transportation (Televic), and general electronics (Lunatone, Sinclair, Mikrolab), with deliveries reaching England, the Netherlands, Germany, Switzerland, Italy, and Austria. Customer acquisition is primarily direct enterprise field sales rather than digital marketing. The company is privately held with no disclosed parent, subsidiaries, funding rounds, or public financial statements.

Name

ZTA

Legal name

Завод за Телефонна Апаратура АД

Website

https://zta-bg.com

Company type

Private

Founded year

1967

Operating status

Operating

Headcount range

51–100 employees

Short description

ZTA AD is a Bansko, Bulgaria-based B2B contract manufacturer founded in 1967, offering vertically integrated metalwork, surface finishing, and electronics assembly services to European OEMs across marine, medical, industrial automation, and building systems sectors.

Ownership category

akta.pro rank

Product category

Contract Manufacturing Services

NAICS

Plate Work and Fabricated Structural Product Manufacturing (33231), Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers (332812), Industrial Machinery Manufacturing (33324)

SIC

Sheet Metal Work (3444)

akta.pro primary industry

Aluminum Fabrication & Finishing (Machining, Anodizing, Coating) (IMAKACAI)

akta.pro secondary industry

Coated & Plated Steel (Galvanized, Galvalume, Tinplate, Electrogalvanized, Color-Coated) (IMAKABAG)

Keywords

• Precision metalworking services
• Contract electronics assembly
• Surface finishing coatings
• PCB assembly manufacturing
• Industrial OEM manufacturing

Headquarters

HQ city

Bansko

HQ country

Bulgaria

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Technology or R&D

Revenue model

1. Contract Manufacturing - Metalwork: ZTA manufactures precision metal components and structures to client specifications, including laser cutting, punching, bending, welding, milling, and turning services. Revenue is generated through project-based orders with pricing quoted per inquiry based on technical requirements, material specifications, and production volumes.
2. Contract Manufacturing - Electronics Assembly: PCB assembly, testing, and electronic product manufacturing services for clients requiring electronic-mechanical products. Includes SMD assembly, manual soldering, cable production, and end-node assembly/testing.
3. Surface Finishing Services: Powder coating, wet painting, galvanic coatings (zinc plating, nickel plating, tin plating), and other finishing services for components and products requiring surface protection and aesthetic finishing.
4. General Terms - Manufacturing and Sale: Standard payment terms of 30 days from invoice date. Pricing subject to modification based on raw material and energy price changes before order confirmation. Ex works delivery terms with delivery deadlines fixed in order confirmations.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

ZTA provides B2B contract manufacturing services combining precision metalwork, surface finishing, and electronics assembly from a single facility in Bansko, Bulgaria. The company produces custom metal components, applies surface coatings, and assembles printed circuit boards and electro-mechanical products to client specifications for European OEMs across marine, medical, industrial automation, and building systems sectors.

Product overview

ZTA (Завод за Телефонна Апаратура / Telephone Equipment Factory) is a manufacturing services company offering three core service lines: Metalwork, Finishing, and Electronics Testing and Assembly. These services are provided as an integrated offering, allowing customers to receive complete manufacturing solutions from metal processing through surface treatment to electronic assembly and testing. The company does not offer a unified software product or platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Metalwork (Металообработка) Comprehensive precision metalworking services including laser cutting, punching, bending, welding, milling, and turning operations for sheet metal, bar material, and profile pipes. Serves industrial OEMs requiring precision metal components to client specifications.
• Finishing (Покрития) Surface treatment and coating services including electrostatic powder coating, wet painting, galvanic coatings (zinc plating, nickel plating, silvering), electropolishing, passivation, anodizing, tin plating, screen printing, and sandblasting. Serves manufacturers requiring surface protection and aesthetic finishing.
• Electronics, Testing and Assembly (Електроника, тестване и монтаж) Electronic manufacturing services including PCB assembly (SMD and through-hole), cable and harness production, assembly and testing of end products, and temperature testing with computerized testers. Serves OEMs requiring electronic-mechanical products with quality validation.

Quantifiable outcome

• Competitive pricing through optimized production processes and in-house capabilities
• +1 more outcomes

Named customers19 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Four partnerships are on record, tiered core.

• Low-Current Relay Factory (Завод за слаботокови релета)coreStrategic or Co-development Partner · 1 January 2003In 2003, ZTA merged with the Low-Current Relay Factory, significantly increasing its technological capabilities and expanding its product portfolio in the electronics manufacturing sector.
• Sperry Marine (Northrop Grumman)coreStrategic or Co-development Partner · 1 January 1998In 1998, ZTA became a partner of British company Sperry Marine, part of Northrop Grumman corporation - a leader in marine radars and navigation equipment. This partnership expanded ZTA's capabilities and experience in electronic product manufacturing and testing, serving the marine industry with components for passenger and commercial vessels.
• TrumpfcoreTechnology or IntegrationEquipment manufacturer supplying high-technology production machines including 1 laser cutting machine, 2 punching machines, and 1 combined laser-punch machine for precision sheet metal processing.
• YaskawacoreTechnology or IntegrationRobotic welding equipment supplier providing welding robots for high-precision arc welding operations with consistent quality.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Note AB: Swedish EMS provider offering PCB assembly, prototyping, and box-build services to European industrial customers. Comparable to ZTA's electronics assembly line and B2B contract manufacturing model.
• Inission AB: Nordic EMS provider with industrial, medical, and measurement equipment customers. Comparable to ZTA's electronics-mechanical integration model and European OEM customer base.
• Scanfil: Finnish contract manufacturer with European and Asian production, providing electronics and mechanics integration. Comparable as a mid-sized European integrated contract manufacturer.
• Connect Group: Swiss EMS company offering electronics manufacturing and box-build for industrial OEMs. Comparable to ZTA's PCB assembly and contract manufacturing service mix.
• Neways Electronics: Dutch EMS company serving industrial, automotive, and medical OEM clients across Europe. Directly comparable to ZTA in electronics manufacturing scope and regulated end-market exposure.
• Hanza Group: Swedish-headquartered contract manufacturer with Eastern European production sites, offering integrated mechanics, electronics, and assembly services. Directly comparable to ZTA in vertical integration model and European OEM customer base.

Broad incumbents

• Sanmina Corporation: Global EMS with European manufacturing footprint serving industrial, medical, and aerospace OEMs. Comparable in vertical integration (mechanics + electronics) and regulated end-market exposure, but at significantly larger scale.
• Jabil: Global contract manufacturer with European operations. Overlaps with ZTA in electronics manufacturing and mechanical assembly, but at scale and capability breadth beyond ZTA's mid-tier positioning.
• Flex Ltd: Global EMS provider with extensive European operations including Bulgaria. Comparable end-market verticals and manufacturing scope, but operates at vastly larger scale and competes for tier-1 OEM contracts.
• Kimball Electronics: Large US-based EMS with European operations serving industrial, medical, and automotive OEMs. Comparable end-markets and contract manufacturing model, but at significantly larger scale than ZTA.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/ZtaBansko
• LinkedInlinkedin.com/company/zta-ad

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ZTA