WELCOME COMPANY PRESENTATION UNSER UNTERNEHMEN THE COMPANY Intro

WELCOME COMPANY PRESENTATION

UNSER UNTERNEHMEN THE COMPANY Intro // Company profile // Organizational chart // Worldwide presence // Company history // Overview of business units // References // Quality standards // ISABELLENHÜTTE HEUSLER GMBH & CO. KG 2

INTRO Corporate film and animations of the business units INTRO

COMPANY PROFILE 2016 2017 2018 137. 1 148. 6 170. 2 Employees 847 911 950 Investments [EUR million] 11. 0 9. 9 8. 6 Turnover [EUR million] Countries 61 Subsidiaries 3 Agents/Distributors 64 Headquarters in Dillenburg, Germany Subsidiary in Swansea, USA Subsidiary in Shanghai, China Subsidiary in Tokyo, Japan

MANAGEMENT BOARD Managing Director and Speaker Jürgen Brust Production Research & Development Finance Controlling & IT Industrial Engineering Quality Management Personnel Management Managing Director and Shareholder Dr Felix Heusler Sales Marketing Purchasing Logistics

MANAGEMENT TEAM Pierre Rappin Manager Process Optimization Daniel Schuppner Manager Frank Nagel Dr. Jan Marien Finance & Manager Finance Vice President Accounting of R&D Anton Roth Rolf Th. Viehmann Michael Schlüter Manager Sales Matthias Göbel Manager Marketing Manager Components Manager Production Industrial Components Engineering Dr. Hermann. Nicole Grill Josef Schmidt Manager HR Manager Quality Andreas Prüfling Manuel Georg Manager Production Business Unit Alloys Klaus Gail Manager Purchasing & Logistics Ralf Gawenda Manager IT Manager Business Unit Measurement Jens Hartmann Vice President Business Unit Alloys

WORLDWIDE PRESENCE Made in Germany Although being a global leader in innovation and technology, Isabellenhütte is still staying to its roots in Dillenburg as much for commercial as for traditional reasons. Hamburg Berlin Cologne Dillenburg Frankfurt Munich 7

WORLDWIDE PRESENCE We supply to 61 countries. With 3 subsidiaries and 64 distributors/agents, we serve with local presence worldwide. Europe North America South America Asia South Africa 8

COMPANY HISTORY Precision Alloys 1482 First documentary mention of the “copper smelter on the Nanzenbach”. Precision and Power Resistors 1987 Start of Precision and Power Resistor division Precision Measurement 2008 Start of Precision Measuring technology division

COMPANY HISTORY 1889 1482 Developmen First documentary t of MANGANIN® mention of the “copper smelter on the Nanzenbach”. 1980 Hot-rolling mill 1987 Start of Precision and Power Resistor division 2002 Certification acc. to ISO/TS 16949 1995 Certification acc. to DIN EN ISO 9002 2008 Start of Precision Measuring technology division 2010 Acquisition of our long 2013 -term trade partner ISOTEK in the USA. Opening of our subsidiary in China Our first subsidiary. TODAY 1827 Isabellenhütte comes into the ownership of the Heusler family 1728 Company renamed to Isabelle Kupferhütte 10 1982 Member of the German Calibration Service (Deutscher Kalibrierdienst) 1952 Start of Thermoelectric and Resistance Alloys division Start of marketing and development of international markets 1998 Certification acc. to DIN EN ISO 9001 2012 Opening of our subsidiary in Tokyo, Japan. 2007 Vacuum-induction furnace Isabellenhütte K. K. 2014 Recommissioning of calibration laboratory Plant for smallscale production

PRODUCT HISTORY 2002 1889 MANGANIN® 1987 World’s first low -ohmic SMD resistor using ISA-PLAN® technology 1992 ISA-WELD® technology 1996 Manufacture of the first electric k. Wh meter module with integrated shunts ISA-ASIC® for electric battery management in cars/HGVs 2007 VMx family, cost-optimised premium resistors 2011 Development of IVT family and IPC phase 2014 current measurement ISA-CON®, NOVENTIN® module TODAY 1967 ZERANIN® 11 1993 First 20 -watt SMD resistor for power hybrid applications 2005 USB precision measuring device for temperature and 1998 resistance Battery current (milliohmmeter) sensor based on ISA-ASIC® consisting of 100 µOhm shunt with integrated electronics 2013 Product development VLx 2008 ISAscale® family measuring technology

CONSOLIDATED SALES BY REGIONS [EUR million] 2016 2017 3. 6 0. 6 26. 1 2018 31. 8 ∑ 137. 1 0. 5 32. 2 26. 5 ∑ 148. 6 29 ∑ 170. 2 35 49. 6 38. 9 23 45. 5 51. 3 62. 3 ■ Germany ■ Rest of Europe ■ Asia ■ North America ■ Others

CONSOLIDATED SALES BY REGIONS [%] 2016 2017 0. 4 19 2018 2. 4 23. 2 17. 8 13. 5 21. 7 0. 3 22. 9 26. 7 21. 2 23. 6 36. 2 34. 5 36. 6 ■ Germany ■ Rest of Europe ■ Asia ■ North America ■ Others

CONSOLIDATED SALES BY BUSINESS UNIT [EURO million] 2016 6. 1 2017 2. 4 13. 2 3. 5 8. 8 9. 8 33. 4 35. 1 ∑ 137. 1 87. 8 2018 39. 6 ∑ 148. 6 ∑ 170. 2 115 101. 1 § § Precision Alloys* Precision and Power Resistors Precision Measurement Others * including metal surcharge

CONSOLIDATED SALES BY BUSINESS UNIT [%] 2016 4. 4 2017 1. 4 7. 7 2. 4 5. 9 7. 1 23. 6 24. 4 64. 1 2018 23. 3 67. 6 68 § § Precision Alloys* Precision and Power Resistors Precision Measurement Others * including metal surcharge

SALES QUANTITY BY BUSINESS UNIT Precision Alloys [tons] 1, 600 1, 501 1, 470 1, 558 Precision and Power Resistors [mio. pieces] 1, 400 800 1, 200 700 600 1, 000 842 900 800 598 700 600 200 200 100 0 2017 2018 2016 2017 300 400 2016 566 400 300 0 551 500 400 600 978 1000 900 714 500 800 Precision Measurement [k pieces] 0 2016 2017 2018

BUSINESS UNIT PRECISION MEASUREMENT 17 PRECISION MEASUREMENT

BUSINESS UNIT PRECISION AND POWER RESISTORS 18 PRECISION AND POWER RESISTORS

Typical Applications Combustion Engines Product pictures are not to scale 19 PRECISION AND POWER RESISTORS

Additional Applications in Electric and Hybrid Vehicles Product pictures are not to scale 20 PRECISION AND POWER RESISTORS

BUSINESS UNIT PRECISION ALLOYS 21 PRECISION ALLOYS

REFERENCES 22

QUALITY STANDARDS 23

PREFERRED SUPPLIER OF BOSCH 2015 AND ESA CERTIFICATE 24

Thank you for your attention. Reference // Month Year ISABELLENHÜTTE HEUSLER GMBH & CO. KG

BACKUP

INNOVATION BY TRADITION HISTORY Emblem as company logo In 1728, the Kupferhütte (copper smelter) was donated by Prince Christian to his wife Isabella Charlotte Princess of Nassau-Dillenburg. The name was changed into Isabelle Kupferhütte. The gate decoration dated 1734 includes the crowned initials of Isabella Charlotte Fürstin zu Nassau (I. C. F. z. N. ). Today, it is the logo of Isabellenhütte. Isabella Charlotte Princess of Nassau

VISION ISABELLENHÜTTE IN THE YEAR 2025 For us, innovation from tradition means: We were, we are and we will be a reliable and competent partner. We are a family-managed, independent world class model company with sustainable and profitable growth. Highly qualified and committed employees advance the company with enthusiasm. Our successes and our culture, which is characterized by appreciation, make us proud of one another. Driven by our pioneering spirit, we significantly contribute to the efficient generation and use of electrical energy worldwide.

MISSION HEAD CONSISTENTLY INTO THE FUTURE We develop new materials, convincing products and Intellicar solutions together with our customers. In the process, we set global standards in current, voltage and temperature measurement technology. The comprehensive technology portfolio of Isabellenhütte makes us unique. Our expertise, our products and our service qualify us as the preferred partner of our customers worldwide. We are characterized by sustainability and reliability. We have been keeping our promises for generations – and will continue to do so in the future

ISABELLENHÜTTE: 8 GENERATIONS OF FAMILY-BASED LEADERSHIP Johann Jacob Heusler Carl Ludwig Heusler Friedrich W. O. Heusler Conrad Heusler Dr. Fritz Heusler 1727 - 1799 1827 - 1851 - 1873 - 1907 - 1937 Fritz Heusler Dr. Felix Heusler UNTERNEHMEN Ernst Heusler Dr. Otto Heusler Dr. Felix Heusler 1937 - 1976 1937 - 1939 1946 - 1966 30 1975 - 2000 seit 2012