DEMGY EIS

Formed from the merger of DEMGY Group and E.I.S.-Aircraft GmbH, DEMGY E.I.S. GmbH is a leading aerospace plastics and composites manufacturer in Germany. With over 60 years of continuous experience in civil and military aviation, the company covers the full value chain — design, engineering, prototyping, qualification, series production, assembly and aftermarket support — across two complementary German sites.

• DEMGY EIS Euskirchen (North Rhine-Westphalia, near Cologne) — DEMGY E.I.S. GmbH headquarters, aerospace composite structures.
• DEMGY EIS Lemgo (North Rhine-Westphalia, near Hanover) — high-performance thermoplastic injection molding.

The business is 100% dedicated to aerospace, under EASA Part 21G, Part 21J, Part 145 and FAA Repair Station approvals.

A single-source partner from design through line-fit delivery, meeting Airbus, Boeing, Embraer and Tier-1 requirements.

2 complementary German sites

DEMGY EIS combines composite and thermoplastic expertise under one organization. Material selection, structural design and qualification are handled in-house, then industrialized on the most appropriate site — reducing supplier interfaces and securing program timelines.

DEMGY EIS Euskirchen — aerospace composites

Composite cabin structures and monuments: prepreg processing, autoclave curing, patented Schalen-Design and honeycomb construction, finishing and integration. Full site details: DEMGY Euskirchen.

DEMGY EIS Lemgo — thermoplastic injection molding

High-performance polymer injection (PEEK, PEI/Ultem™, PSU – polysulfone, PPS), in-house tooling and sub-assembly. Metal-to-plastic substitution for weight and cost reduction. Full site details: DEMGY Lemgo.

Aerospace cabin applications

DEMGY EIS designs and manufactures the full range of cabin interior components — from visible and structural parts to complete monuments and safety equipment. Detailed product scope, platforms and engineering capabilities are covered on the dedicated pages:

• Cabin plastic components (PSU, window frames, seat parts, latches & hinges, standard parts)
  → Aircraft Interiors Plastics
• Class dividers, curtain systems, partitions
  → Aircraft Class Divider
• Cabin monuments & emergency equipment (stowages, galleys, CAS Moving Adapter, crash axe)
  → Composite Cabin Structures & Monuments
• Design, qualification & program management
  → Engineering & Program Management

Quality, certifications & regulatory approvals

• EASA Part 21J
  Design Organization Approval (Ref. EASA.21J.798)
• EASA Part 21G
  Production Organization Approval (Ref. DE.21G.0192)
• EASA Part 145
  Maintenance Organization Approval (Ref. DE.145.1014)
• FAA Repair Station Approval (Ref. 3I5Y688D)
• DIN EN 9100:2018
  certified by AFNOR, both sites
• Synesgy (CSR / supply-chain assessment) + signed Code of Conduct

One of the few European specialists holding EASA 21G, 21J, Part 145 and FAA approvals across the full cabin lifecycle.

Connected to the DEMGY Group international network

Integration into DEMGY Group gives DEMGY EIS access to the circular Multiplasturgy® — 15 areas of expertise (injection, polymer machining, composites, 3D printing, metallization, assembly, recycling) — in direct cooperation with DEMGY Pacific (USA), DEMGY Normandie and DEMGY Chicago. This enables dual-source EU / North America delivery on new aerospace programs.