Welcome to Lapp Insulators Alumina GmbH W E P O W E R T H E F U T U R E 3rd ASPERA Technology Forum Industry meets Academica: Vacuum & Cryogenics Darmstadt, 13.-14.3.2012

Industrial Park Redwitz with LAPP Factories Lapp Insulators GmbH: Porcelain insulators (500kV) Composite hollow insulators (500kV) Lapp Insulators Alumina GmbH: Thyristor housings Diodes Feedthroughs Components for x-Ray and Vacuum technology Porcelain Alumina

History/Roadmap Redwitz Company History History/Roadmap Redwitz Company transactions 1950 1970 Founding of the Ceramic Insulators plant Founding of the Alumina Oxide Ceramics plant 1990 1995 Opening of Sales Office in Alpharetta, Georgia (USA) Founding of the Composite Insulators plant (SIMOTEC) 1998 Acquisition of Siemens Fabryka Izolatorow Sp. Z.o.o., Jedlina Zdrój – production of medium and low-voltage insulators in Poland 2004 Acquisition of IZOCER, Turda (Romania) 2002 Carve out from Siemens AG and sale to Demag Holding, Luxemburg (81% KKR, 19% Siemens) 2007 Sale to Johnson Matthey plc, Environmental Control Technology (ECT) Division 2008 2011 Sale of the Redwitz factories to LAPP Insulators GmbH (Andlinger Invest) Sale to Quadriga Capital Services GmbH

Numbers and Certificates LAPP Insulators Alumina GmbH Specialist for: Aluminumoxide (96%; 97,5%; 99,97%) Vaccum tight metal-ceramic-joints (brazing) Customized parts within 6 weeks Metallizing and Nickel plating (electro/electroless) Organization Splitted in „Housings“ and Profit Centre „New Products“ since 2011 Production Area 4500m² Turnover/Employees approx. 13 Mio. € / 77 Certification DIN EN ISO 9001:2000 DIN EN ISO 14001:2005 OHRIS Insulators Alumina Alumina products

Production Process Whole production chain in one hand, from powder till Ni-plating We handle more than 200 to of OF-Cu a year (contact pieces of thyristors) Alumina consumption > 150 to a year / 6m² sintering capacity in 7 kilns Self optimized He-vacuum tightness test rigs till 10-10 mbarL/s MoMn-Metallization paste, alumina powder and overglaze is produced in house

Housings for High Power Semiconductors – „Housings“ Dimensions Voltage class up to 10.000V and 8000A Diameters 2“-6“ Application Power generation and transmission HVDC-stations (AC/DC – transformation) Welding diodes Fast starters Technical data: Material: Al2O3 96%; OF-Cu Joining technology: Brazing with MoMn-Metallizing Control mode: Gate or light ingnited He-vacuum tightness: 10-9 mbarL/s Ceramic surface outside: glazed Bonding Strength Metallization >200 N/mm² (average)

Profit Center „New Products“ – New Products with well known and new Technologies Goals Developing new products by using well known technologies Prototyping in 6 weeks with specialized team Implementing new technologies who are fitting to core business Enhancing turnover Actions Empowering market acceptance – Attendance of several fairs to push degree of popularity (Hannover Fair 2011/12; Ceramitec 2012…) Developing standard program feedthroughs Entering new business fields – Laser technology Developing new brazing technology for stainless steel in house; ENIG-method for substrates Results Doubling number of customers in one year 15 new products in market right now Significant increase of turnover

New Products – Vacuum Interrupter Tubes Dimensions Various up to 305 mm in diameter Application Vacuum switches for medium voltage Step switches Technical data: Material: Al2O3 96%; Electrical strength >30kV/mm Joining technology: Brazing with MoMn-Metallizing Ceramic surface outside: glazed Bonding Strength Metallization >200 N/mm² (average) Produced tubes >200.000 p.a. Medium Voltage (-42kV) High Voltage (D 200mm) Medium Voltage (-42kV)

New Products – Customized Feedthroughs Feedthrough for Plasma Coating 130A, 11kV Insulated Support 15kV (EN 60664) Feedthrough 12kV (C220) Customized Feedthrough Technical data: Material: Al2O3 96%/99.97%,Steatite; Electrical strength >10-30kV/mm Joining technology: Brazing with MoMn-Metallizing/active brazing Joining materials: Copper/NiFe/stainless steel Bonding Strength Metallization >200 N/mm² (average)

Single Feedthrough with CF-Flange Double Feedthrough with KF-Flange New Products – Standard Program Feedthroughs Single Feedthrough Single Feedthrough with CF-Flange Single Feedthrough with KF-Flange Double Feedthrough with KF-Flange Technical data: Material: Al2O3 96%/NiFe42;Stainless steel; Conductor OF-CU or NiFe He-Vaccum-tightness 10-9 mbarL/s Voltage from 1kV to 8kV and 80A Temperature range: -150°C - 300°C

New Products – Laser Technology Source of CO2-Laser Beam – Metallized Cathodes with glass shielding (air flashover) Source of CO2-Laser Beam – Multidirectional MoMn-Printing (+ front edges)

New Products – Special components Metallized/Brazed Parts Application of ceramic-metal-joints in wear protection – cost effectiveness Engineering with FEA-method to choose optimal joints before prototyping Technical data: Material: depends on customer and application (f.e. conductive ceramics; Si3N4 or ZrO2) Joining technology: Brazing with MoMn-Metallizing/active brazing/glueing/shrinkage fit Design: from 1 mm to 300 mm Diameter; length till 500mm

New Products – New Technologies Gold-plating by ENIG-method (Electroless Nickel Immersed Gold) Gold-plated Substrates Technical data: Material: Al2O3 96%, metallized;Ni-plated; gold plated Thickness measurement of Au-layer in nanometer-range Measurement of bonding strength for ultrasonic bonded wires

Outlook Alumina will generating a further growing in the new business fields With new technologies Alumina will develop as a specialist in a niche market To fulfil the market demands we will act with a very flexible team to reduce lead times and deliver a high quality The new standard program will be active after Hannover fair 2012