3U Holding AG

Quarterly Report • May 14, 2024

Quarterly Announcement 1/2024

Group results at a glance

3U Group		Q1 2024	Q1 2023	+/–
Group revenue	EUR million	13.7	13.3	3.4%
ITC		4.8	3.1	53.1%
Renewable Energies		1.2	2.5	–54.6%
SHAC		8.0	7.8	2.9%
Group-EBITDA	EUR million	0.7	1.9	–59.8%
ITC		1.2	0.9	27.5%
Renewable Energies		0.7	1.9	–64.7%
SHAC		–0.2	–0.1
EBITDA margin	%	5.5	14.0
ITC		24.7	29.7
Renewable Energies		58.1	74.7
SHAC		–2.7	–1.7
Net income for the period	EUR million	0.1	1.4	–95.1%

3U Group		31/3/2024	31/12/2023	+/–
Equity ratio	%	75.2	75.1
Cash and cash equivalents	EUR million	51.2	55.4	–7.6%
Working Capital	EUR million	68.7	68.9	–0.2%
Net cash	EUR million	35.9	39.8	–9.7%
Free Cashflow	EUR million	–3.5	–7.4
Employees	FTE	160	164	–2.4%
ITC		63	68	–7.4%
Renewable Energies		5	4	25.0%
SHAC		64	65	–1.5%
Holding		28	27	3.7%

Contents 1

Records

Highlights

Interim Group Management Report

• Result of operations and financial position
• Result of operations
• Financial and asset position
• Events after the balance sheet date
• Outlook
• Development of the 3U share price

Interim Consolidated Financial Statements

• Consolidated statement of financial position
• Consolidated statement of income
• Segment information

Additional Information

• Financial calendar
• Contact
• Imprint
• Disclaimer
• 3U Group

Highlights

March 2024

• Selfio expands its online range

Just in time for spring, with sunnier days ahead, Selfio, a 3U HOLDING AG Group company, is expanding its range of photovoltaic systems and battery storage systems. From solar modules, inverters and power storage units through to kits with perfectly coordinated components, the company functions as a one-stop shop for a new photovoltaic system or for the upgrading of an existing system. Homeowners can procure all the components they need from the online shop to generate climate-compatible electricity.

• 3U obtains approval for repowering

3U ENERGY PE GmbH, a wholly owned subsidiary of 3U HOLDING AG, has obtained approval for the construction of new wind turbines on the Langendorf Wind Farm in Saxony-Anhalt, Germany. The approval covers the building and operating of turbines along with the construction of access roads to the individual turbine sites. There are also plans for building a substation for feeding the energy produced into the grid. Work on preparing the site for building is due to commence in the autumn of 2024. The repowering project provides for seven of the 15 existing wind turbines to be replaced by five new turbines. The new wind turbines have a nominal output of 6.2MW. The installed wind turbine capacity in Langendorf will be raised from currently 22.5MW to 43.0MW.

April 2024

• www.selfio.de awarded once again

www.selfio.de, the leading online shop for home technology products in the Group, has again been admitted to the ranks of Germany's best online shops by the COMPUTER BILD magazine and the market research portal Statista. selfio.de has been awarded a prize for the seventh time in a row in this competition. As a result, the 3U subsidiary's e-commerce shop ranks among the 36 Top Shops 2024 in the "Home Technology" segment. The "Technical Quality" and "User Friendliness" received "very high" ratings from the testers. The comprehensive offer of home technology products, flanked by numerous product innovations for saving energy, combined with a reliable customer service and unique advisory service are a central focus of the 3U Group's strategy.

Result of operations and financial position 3

Result of operations

Result of the Group's operations

3U HOLDING AG started the new financial year on a positive note 2024, with its growth trajectory holding steady. Consolidated revenue from continued operations rose by 3.4% to EUR 13.7 million in the first quarter of 2024 (Q1 2023: EUR 13.3 million). The development of the two ITC and SHAC segments made a definitive contribution to the Group's success.

The ITC segment was the strongest driver of growth. Following weak construction activity in the previous year, the SHAC segment also reported a slight upturn in revenue in the first months of 2024. Unfavourable weather conditions, lower selling prices and outages in the wind farms resulted in the Renewable Energies segment being unable to match its good year-earlier performance in the first quarter of 2024. A technical defect in the Langendorf Wind Farm's substation in particular prevented electricity being fed into the grid in January. However, this defect was rectified at the beginning of February.

The ITC segment generated a share in sales revenue (net of consolidation effects) of 34.8% (Q1 2023: 23.5%), while the Renewable Energies segment delivered only 8.4% (Q1 2023: 19.2%) and the SHAC segment 58.1% (Q1 2023: 58.4%).

Revenue split by segment*

Other operating income in the Group advanced by 53.9% to EUR 0.6 million (Q1 2023: EUR 0.4 million). This figure was mainly impacted by the compensation paid out as a result of technical defects in the Renewable Energies segment.

Changes in inventories of EUR 0.4 million in the reporting quarter (Q1 2023: EUR 0.1 million) are also largely attributable to ongoing wind farm projects in the Renewable Energies segment.

Measured against revenue, the cost of materials rose disproportionately by 15.3%, with all segments contributing to this trend. The Group's cost of materials ratio (cost of materials as a percentage of sales) increased significantly, from 61.7% to 68.8%. Against this backdrop, gross profit declined marginally in the first quarter of 2024 versus the previous year's period, dropping from EUR 5.6 million to EUR 5.4 million. The gross profit margin declined accordingly, from 42.3% to 39.1%.

The personnel expenses ratio (personnel expenses as a percentage of revenue) came in at 19.3% in the first quarter of 2024, up from 15.7% in the year-earlier period. Compared with the first three months of 2023, other operating expenses as a proportion of sales increased from 12.5% to 14.3%, also due to higher maintenance costs and repairs to the wind energy facilities.

Along with the higher cost of materials, the increase in personnel expenses and other operating expenses by 27.4% and 18.0% respectively also contributed to the decline in EBITDA. In the first three months of 2024, earnings before interest, taxes, depreciation and amortisation (EBITDA) stood at EUR 0.7 million compared with the year-earlier figure of EUR 1.9 million, which corresponds to an EBITDA margin of currently 5.5% (Q1 2023: 14.0%).

Group result

4

Depreciation and amortisation totalled EUR 1.0 million in the first quarter of 2024 (Q1 2023: EUR 0.9 million). During the period under review 3U also continued to report a positive financial result of EUR 0.3 million (Q1 2023: EUR 0.8 million), along with tax income of EUR 0.1 million (Q1 2023: tax expenses of EUR 0.2 million).

The proportion of the consolidated result attributable to shareholders of the parent company amounted to EUR 0.1 million (Q1 2023: EUR 1.4 million). Consolidated earnings per share came in at EUR 0.00 (basic and diluted) following on from EUR 0.04 the year before.

Development in the Group in EUR million

Employees

As of 31 March 2024, the 3U Group employed a workforce of 183 persons in total (including Management Board members, temporary employees and part-time staff; 31 March 2023: 145 persons). The 26.2% increase in the workforce is attributable on the one hand to the takeover of the cs companies in the previous year while, on the other, must be seen in the context of the growth plans for the three operating segments. Converted into full-time equivalents, the 3U Group employed 160 staff members at the end of the first quarter (31 March 2023: 129 full-time equivalents).

They are distributed among the individual segments as follows:

*Full-time equivalents

Segment results

6

ITC (Information and Telecommunications Technology) segment

In the first quarter of 2024, the ITC segment lifted its revenue significantly by 53.1% in a year-on-year comparison, from EUR 3.1 million to EUR 4.8 million. The decline anticipated in the Voice Retail business was offset by notable growth in Managed Services and Voice Business. As a result, the segment's gross profit rose by 47.6% and, by the end of the first three months of 2024, had achieved a figure of EUR 2.6 million (Q1 2023: EUR 1.8 million). Personnel expenses in the ITC segment amounted to EUR 1.0 million (Q1 2023: EUR 0.5 million). The increase is principally due to acquisitions and to the takeover of the cs companies. Other operating expenses also increased slightly. Having posted EUR 0.3 million in the first quarter of 2023, they amounted to EUR 0.5 million in the reporting period. Segment EBITDA rose to EUR 1.2 million (Q1 2023: EUR 0.9 million). The EBITDA margin stood at 24.7% in the reporting period compared with 29.7% the year before. On the back of a positive financial result of EUR 0.1 million (Q1 2023: EUR 0.0 million), the ITC segment generated earnings after taxes of EUR 1.2 million in the period under review, reflecting an increase of 41.7% compared with the year-earlier figure (Q1 2023: EUR 0.9 million).

Development in the ITC segment in EUR million

Renewable Energies segment

Due to the weather, and first and foremost because of a technical defect in the Langendorf Wind Farm's substation in January, the Renewable Energies segment recorded a significantly lower energy yield than in the strong first quarter of 2023. The power produced by the wind farms in the first three months of 2024 totalled 15.0 GWh as against 22.3 GWh in the year-earlier period, reflecting a decline of 32.7%. The Adelebsen Solar Park generated electricity of 1.3 GWh in the reporting period, thereby matching the previous year's level (Q1 2023: 1.3 GWh). The Renewable Energies segment's revenue dropped by 54.6% as a consequence of considerably lower monthly market values and settled at a level of EUR 1.2 million (Q1 2023: EUR 2.5 million). Other operating expenses that were again determined by unscheduled repair costs amounted to EUR 0.6 million in the reporting period (Q1 2023: EUR 0.5 million). Segment EBITDA also declined substantially for the same reasons and, at EUR 0.7 million, fell 64.7% short of the year-earlier figure (Q1 2023: EUR 1.9 million). A negative financial result and profit participation by the limited partners translated into a segment result net of minority interest of EUR –0.3 million (Q1 2023: EUR 0.8 million).

7

Development in the Renewable Energies segment in EUR million

8

SHAC (Sanitary, Heating and Air Conditioning Technology) segment

The SHAC segment's revenue increased by a gratifying 2.9% to EUR 8.0 million in the first three months of 2024 (Q1 2023: EUR 7.8 million). Growing demand for photovoltaic modules, inverters and electricity storage right through to full-scale PV plants was especially evident in the upturn in e-commerce operations during the reporting period. At the same time, the SHAC segment's cost of materials ratio continued to run at a high level of 82.8% (Q1 2023: 82.2%). The segment's gross profit nevertheless rose marginally by 1.5% to EUR 1.5 million. Given the slight increase in operating expenses (personnel and other operating expenses), EBITDA came in at EUR –0.2 million (Q1 2023: EUR –0.1 million). Against the backdrop of depreciation and amortisation remaining unchanged, but a rather more negative balance sheet, the segment result declined from EUR –0.5 million to EUR –0.6 million.

Development in the SHAC segment in EUR million

Financial and asset position

As of 31 March 2024, total assets stood at EUR 119.3 million and thus at the level posted on 31 December 2023 (EUR 119.3 million). On the assets side, the increase in inventories of EUR 2.6 million is mainly attributable to higher stock levels in the SHAC segment. The decline of EUR 4.2 million in the Group's cash and cash equivalents is largely to be seen in the context of the increase in inventories in the reporting quarter.

The equity ratio stood at 75.2% as of 31 March 2024 (31 December 2023: 75.1%). Non-current and current liabilities dropped slightly overall, from EUR 29.8 million to EUR 29.6 million, which contributed to improving the debt-to-equity ratio which edged down from 33.2% to 33.1%. By contrast, the net cash position declined despite reduced financial liabilities and, at the end of the reporting period, posted EUR 35.9 million (31 December 2023: EUR 39.8 million).

Along with cash outflow of EUR 0.4 million from investment activities, principally associated with building the new company headquarters in Marburg (Q1 2023: cash inflow of EUR 0.3 million) and funds of EUR 0.7 million disbursed from financing activities resulting from the scheduled redemption of loans (Q1 2023: cash inflow of EUR 0.2 million), the Group reported lower cash outflow from operating activities of EUR 3.1 million in the first quarter of 2024 (Q1 2023: EUR 4.4 million). Free cash flow improved somewhat as a result but at EUR –3.5 million still remains in negative territory (Q1 2023: EUR –4.1 million).

3U Group (in kEUR)	1/1—31/3 2024	1/1—31/3 2023
Cash flow	–4,201	–3,931
Cash flows from operating activities	–3,061	–4,403
Cash flows from investing activities	–423	268
Cash flows from financing activities	–717	204
Changes in cash and cash equivalents	–4,201	–3,931
Cash and cash equivalents at the beginning of period	52,440	186,813
Cash and cash equivalents at the end of period	48,239	182,882

Condensed statement of cash flows

11

Events after the balance sheet date

No events of material significance for 3U HOLDING AG or that would have significantly impacted the Group's financial position, net assets and results of operations occurred after the balance sheet date of 31 March 2024.

Outlook

12

The company anticipates further profitable growth in 2024. The Management Board assumes that the ITC segment will continue to perform well. At the same time, as part of its MISSION 2026 growth strategy, the Board will continue to concertedly implement the measures necessary to strengthen its competitiveness in its SHAC e-commerce operations. These measures include the realignment of the range on offer, flanked by expanding the proportion of profitable products and services, along with streamlining low growth niche activities. As far as the Renewable Energies segment is concerned, 3U is opting for extensive investments to expand its own power generating capacities.

Having obtained approval for the Langendorf Wind Farm repowering project, the Group can move ahead in realising the project in the coming quarters with the aim of raising installed capacity in Langendorf from 22.5MW to 43MW as planned over the period through to the end of 2025. Depending on the general conditions in the construction industry, the Group is anticipating further growth in the SHAC segment later on in the year.

Accordingly, 3U expects overall revenue for 2024 — without acquisitions — to settle in a range of between EUR 58 million to EUR 62 million, which would correspond to a year-on-year increase of around 10% and 18% respectively. Owing to the necessary upfront investments in 3U's future competitiveness, and in conjunction with repowering measures commencing at the Langendorf location, the EBITDA margin is anticipated in a range of approximately 7% to 8% in 2024. Net of these one-off effects, the return would improve further in 2024.

110

Development of the 3U share price

Performance of the 3U share from 1 January 2024 to 30 April 2024 compared to the Prime All Share

Consolidated statement of financial position

14

Assets — 3U Group (in kEUR)	31/3/2024	31/12/2023
Non-current assets	39,214	39,647
Intangible assets	5,435	5,501
Property, plant and equipment	26,755	27,003
Rights of use	2,723	2,818
Investment property	3,586	3,596
Other financial assets	107	107
Deferred tax assets	525	537
Other non-current assets	83	85
Current assets	80,098	79,661
Inventories	16,281	13,707
Trade receivables	5,337	3,933
Contract assets	73	513
Income tax receivables	1,296	1,206
Other current assets	5,900	4,890
Cash and cash equivalents	51,211	55,412
Total assets	119,312	119,308

Shareholders' equity and liabilities — 3U Group (in kEUR)	31/3/2024	31/12/2023
Shareholders' equity	89,666	89,548
Subscribed capital	36,813	36,813
Treasury shares	–3,241	–3,241
Capital reserve	7,708	7,708
Retained earnings	36,771	36,935
Profit/loss carried forward	10,509	7,957
Net income	69	2,552
Total shareholders' equity attributable to the shareholders of 3U HOLDING AG	88,629	88,724
Non-controlling interests	1,037	824
Non-current liabilities	18,269	18,972
Non-current provisions	1,490	1,481
Non-current financial liabilities	13,826	14,146
Non-current lease liabilities	2,028	2,223
Deferred tax liabilities	564	740
Other non-current liabilities	361	382
Current liabilities	11,377	10,788
Current provisions	193	509
Current income tax liabilities	471	446
Current financial liabilities	1,463	1,463
Current lease liabilities	793	847
Trade payables	5,442	4,682
Other current liabilities	3,015	2,841
Total shareholders' equity and liabilities	119,312	119,308

Consolidated statement of income 17

3U Group (in kEUR)	1/1—31/3 2024	1/1—31/3 2023
Revenue	13,725	13,270
Other income	646	420
Changes in inventories of finished services and work in progress	416	99
Other capitalised services	14	0
Cost of materials	–9,436	–8,181
Gross profit/loss	5,365	5,608
Personnel expenses	–2,654	–2,083
Other operating expenses	–1,963	–1,663
EBITDA	748	1,862
Depreciation and amortisation	–954	–850
EBIT	–206	1,012
Financial income	379	901
Financial expenses	–127	–133
Financial result	252	768
EBT	46	1,780
Income taxes	86	–187
Profit before minority interests	132	1,593
Net profit/loss for the period	132	1,593
Of which attributable to minority interest	63	187
Of which consolidated net income	69	1,406
Earnings per share, basic (in EUR)	0.00	0.04
Earnings per share, diluted (in EUR)	0.00	0.04

Segment information

Segment reporting 1/1–31/3/2024 (in kEUR)	ITC	Renewable Energies	SHAC	Subtotal	Other activities	Reconcili ation	Group
Third-party revenue	4,592	1,157	7,976	13,725	0	0	13,725
Revenue from other segments/business areas	185	0	0	185	520	–705	0
Intercompany revenue (intra-segment revenue)	352	34	5,307	5,693	0		5,693
Total revenue	5,129	1,191	13,283	19,603	520	–705	19,418
Less intercompany revenue	–352	–34	–5,307	–5,693	0		–5,693
Segment revenue/Group revenue	4,777	1,157	7,976	13,910	520	–705	13,725
Other operating income	289	236	104	629	70	–53	646
Changes in inventory	0	372	44	416	0	0	416
Other capitalised services	0	0	0	0	0	14	14
Cost of materials	–2,471	–364	–6,601	–9,436	0	0	–9,436
Gross profit or loss	2,595	1,401	1,523	5,519	590	–744	5,365
Personnel expenses	–965	–128	–869	–1,962	–692	0	–2,654
Other operating expenses	–451	–600	–867	–1,918	–670	625	–1,963
EBITDA	1,179	673	–213	1,639	–772	–119	748
Depreciation and amortisation	–159	–508	–186	–853	–172	71	–954
EBIT	1,020	165	–399	786	–944	–48	–206
Financial result*	71	–319	–208	–456	1,041	–333	252
Other financial result	71	–319	–208	–456	1,041	–333	252
Income tax	122	–47	0	75	0	11	86
Net profit/loss	1,213	–201	–607	405	97	–370	132
Of which attributable to
non-controlling interests	0	63	0	63	0	0	63
Net income/loss	1,213	–264	–607	342	97	–370	69

*Before profit transfer

Segment reporting 1/1–31/3/2023 (in kEUR)	ITC	Renewable Energies	SHAC	Subtotal	Other activities	Reconcili ation	Group
Third-party revenue	2,962	2,549	7,751	13,262	8	0	13,270
Revenue from other segments/business areas	157	0	0	157	465	–622	0
Intercompany revenue (intra-segment revenue)	303	59	4,538	4,900	0	–4,900	0
Total revenue	3,422	2,608	12,289	18,319	473	–5,522	13,270
Less intercompany revenue	–303	–59	–4,538	–4,900	0	4,900	0
Segment revenue/Group revenue	3,119	2,549	7,751	13,419	473	–622	13,270
Other operating income	262	6	121	389	79	–48	420
Changes in inventory	0	102	–3	99	0	0	99
Cost of materials	–1,623	–189	–6,369	–8,181	0	0	–8,181
Gross profit or loss	1,758	2,468	1,500	5,726	552	–670	5,608
Personnel expenses	–525	–37	–826	–1,388	–695	0	–2,083
Other operating expenses	–308	–527	–805	–1,640	–23	0	–1,663
EBITDA	925	1,904	–131	2,698	–166	–670	1,862
Depreciation and amortisation	–108	–510	–181	–799	–159	108	–850
EBIT	817	1,394	–312	1,899	–325	–562	1,012
Financial result*	40	–231	–149	–340	1,442	–334	768
Other financial result	40	–231	–149	–340	1,442	–334	768
Income tax	–1	–186	0	–187	0	0	–187
Net profit/loss	856	977	–461	1,372	1,117	–896	1,593
Of which attributable to
non-controlling interests	0	193	–6	187	0	0	187
Net income/loss	856	784	–455	1,185	1,117	–896	1,406

20 Financial calendar

• • Publication of the Quarterly Announcement 1/2024 14 May 2024
• • Participation in Spring conference Equity Forum, Frankfurt/Main 15 May 2024
• • Annual General Meeting 2024, Marburg 28 May 2024
• • Publication of 6 Month's Report 2024 13 August 2024
• • Participation in Hamburger Investorentage 21 August 2024
• • Participation in Autumn conference Equity Forum, Frankfurt/Main 2–3 September 2024
• • Publication of the Quarterly Announcement 3/2024 12 November 2024
• • Participation in Deutsches Eigenkapitalforum, Frankfurt/Main 25–27 November 2024

The current financial calendar is available on the 3U HOLDING AG website (www.3u.net).

Contact 21

Company address 3U HOLDING AG Frauenbergstraße 31–33 35039 Marburg Germany

Postal address 3U HOLDING AG P.O. Box 22 60 35010 Marburg Germany

Investor relations Thomas Fritsche Tel. : +49 (0) 6421 999-1200 ir@3u.net www.3u.net

22 Imprint Disclaimer

Published by 3U HOLDING AG Frauenbergstraße 31–33 35039 Marburg Germany

(page 17)

Photos Kannapat — stock.adobe.com (title) // 3U ENERGY PE GmbH (page 10) // 3U HOLDING AG — Henrik Isenberg Fotografie Marburg

Font Interstate by Tobias Frere-Jones (manufacturer: The Font Bureau)

Translation Diana Polkinghorne mba, ba DP Business & Financial Translations Ltd

© 2024 3U HOLDING AG, Marburg

This quarterly announcement contains statements relating to the future which are subject to risks and uncertainties and which are assessments of the management of 3U HOLDING AG and reflect its current opinions with regard to future events. Such predictive statements can be recognised by the use of terms such as "expect", "assume", "estimate", "antici pate", "intend", "can", "plan", "project", "will" and similar expressions. Statements relating to the future are based on current and valid plans, estimates and expectations. Such statements are subject to risks and uncertainties, most of which are difficult to estimate and which are generally beyond the control of 3U HOLDING AG.

The following are — by no means exhaustive — examples of factors that may trigger or affect a deviation: the development of demand for our services, competitive factors — including price pressure —, technological changes, regulatory measures, risks in the integration of newly acquired companies. If any of these or other risks and uncertain factors occur, or if the assumptions on which the statements are based prove to be incorrect, the actual results of 3U HOLDING AG may differ materially from those outlined or implied in these statements. The company does not undertake to update predictive statements of this nature.

This quarterly announcement contains a range of figures which are not part of commercial regulations and the International Financial Reporting Standards (IFRS), such as EBT, EBIT, EBITDA and EBITDA adjusted for special influences, adjusted EBITDA margin, investments (capex). These figures are not intended to substitute the information for 3U HOLDING AG in accordance with the German Commercial Code (HGB) or IFRS. It should be noted that the figures for 3U HOLDING AG which are not part of commercial regulations and the IFRS, can only be compared to the corresponding figures of other companies to a certain extent.

The interim consolidated financial statements and the interim Group management report were neither audited in accordance with § 317 HGB nor reviewed by an auditor.

The English translation was prepared for convenience reasons. The only binding document is the original German quarterly announcement.

3U Group* 3

3U HOLDING AG

Renewable Energies

010017 Telecom GmbH Marburg, Germany

ITC

3U TELECOM GmbH Marburg, Germany

3U TELECOM GmbH Vienna, Austria

cs communication systems GmbH Pleidelsheim, Germany

cs network GmbH telecommunication services Pleidelsheim, Germany

Discount Telecom S&V GmbH Marburg, Germany

Exacor GmbH Marburg, Germany

fon4U Telecom GmbH Marburg, Germany

LineCall Telecom GmbH Marburg, Germany

OneTel Telecommunication GmbH Marburg, Germany

RISIMA Consulting GmbH Marburg, Germany

3U ENERGY AG Marburg, Germany

3U ENERGY PE GmbH Berlin, Germany

3U Euro Energy Systems GmbH Marburg, Germany

Immowerker GmbH Marburg, Germany

Repowering Sachsen-Anhalt GmbH Marburg, Germany

Solarpark Adelebsen GmbH Adelebsen, Germany

Windpark Klostermoor GmbH & Co. Betriebs-KG Marburg, Germany

Windpark Langendorf GmbH & Co. KG Marburg, Germany

Windpark Langendorf Verwaltungsgesellschaft mbH Marburg, Germany

Windpark Roge GmbH Marburg, Germany

Windpark Roge GmbH & Co. Betriebs-KG Marburg, Germany

SHAC

Atrium 270. Europäische VV SE Düsseldorf, Germany

Calefa GmbH Koblenz, Germany

PELIA Gebäudesysteme GmbH Koblenz, Germany

samoba GmbH Bad Honnef, Germany

Selfio GmbH Bad Honnef, Germany

3U HOLDING AG P.O. Box 2260 35010 Marburg Germany

Tel.: +49 (0) 6421 999-0

www.3u.net