The ExOne Company and SGL Group Announce Availability of CARBOPRINT®

• Optimal synergies between ExOne and SGL as partner companies
• Initial material design study complete
• Starting component development and production with selected
  customers

NORTH HUNTINGDON, Pa.–(BUSINESS WIRE)–The
ExOne Company (NASDAQ:XONE) (“ExOne” or “the Company”), a global
provider of three-dimensional (“3D”) printing machines and 3D printed
products to industrial customers, announced that SGL
Group is bringing carbon and graphite components created using
ExOne’s 3D binder jet printing technology to the market under the brand
name CARBOPRINT®.

“ExOne has formed a unique collaborative relationship with SGL Group who
has developed a material that is ideally suited for our binder jetting
technology,” said Rick Lucas, ExOne’s Chief Technology Officer. “Each
party brings their expertise: SGL Group offers extensive knowledge on
raw material and powder preparation, as well as versatile technologies
for post-processing carbon components. As the leading supplier for
industrial binder jetting technology, ExOne contributes its competencies
in 3D printing. This technology enables not only the production of small
prototypes, but also efficient serial production and fast development of
customer-specific solutions.”

As the carbon body is initially porous after printing, SGL Group
post-processing, such as polymer impregnation or silicon or metal
infiltration, play a major role. These additional processes allow the
adjustment of versatile material properties to the specific application.
Initial material properties for carbon 3D printing along with the
relevant finishing processes can be found in the SGL Group CARBOPRINT®
product brochure.

Now that the initial material development study is complete, SGL is
engineering components and transforming the extreme degree of design
freedom in 3D printing into real benefits for customers. Thanks to the
basic properties of carbon, such as high chemical stability and good
electrical and thermal conductivity, first trial components are being
developed for testing in applications in the areas of chemical apparatus
construction and environmental technology. Specific examples include
heat exchangers and components for distillation columns, as well as pump
components made of siliconized 3D-printed carbon.

CARBOPRINT® was presented officially to a larger application
specialist audience for the first time at the Berlin Waste Management
and Energy Conference in late January.

About ExOne

ExOne is a global provider of 3D printing machines and 3D printed and
other products, materials and services to industrial customers. ExOne's
business primarily consists of manufacturing and selling 3D printing
machines and printing products to specification for its customers using
its installed base of 3D printing machines. ExOne’s machines serve
direct and indirect applications. Direct printing produces a component;
indirect printing makes a tool to produce a component. ExOne offers
pre-production collaboration and print products for customers through
its network of ExOne Adoption Centers (EACs) and Production Service
Centers (PSCs). ExOne also supplies the associated materials, including
consumables and replacement parts, and other services, including
training and technical support that is necessary for purchasers of its
3D printing machines to print products. The Company believes that its
ability to print in a variety of industrial materials, as well as its
industry-leading volumetric output (as measured by build box size and
printing speed) uniquely position ExOne to serve the needs of industrial
customers.

About the SGL Group – The Carbon Company

The SGL Group is a leading manufacturer worldwide of products and
materials made from carbon. The extensive product portfolio ranges from
carbon and graphite products, carbon fibers all the way through to
composites. The SGL Group’s core expertise comprises the control of
high-temperature technologies as well as the deployment of many years’
of application and engineering know-how. This is used to exploit the
company’s wide materials base. These carbon-based materials combine a
number of unique material properties such as very good conductivity of
electricity and heat, resistance to heat and corrosion as well as
lightweight construction coupled with high firmness. The level of demand
for the SGL Group’s high-performance materials and products is
increasing due to the industrialization of the growth regions of Asia
and Latin America and the ongoing substitution of traditional
construction materials by new materials. The SGL Group’s products are
deployed in the automotive and chemicals industries as well as in the
semiconductor, solar, LED industry segments and in the field of
lithium-ion batteries. Carbon-based materials and products are also used
in wind energy, aviation and space travel as well as in the defense
industry.

With 32 production locations in Europe, North America and Asia as well
as a service network in over 100 countries, the SGL Group is an
enterprise with a global orientation. In the 2016 financial year,
approximately 4,000 employees generated 769.8 million euros in sales
revenue. Its Head Office is based in Wiesbaden / Germany.

Further particulars on the SGL Group can be found in the Newsroom of the
SGL Group at www.sglgroup.com/press
and at www.sglgroup.com.

Contacts

For ExOne:
Brian Smith, 724-765-1350
Chief Financial
Officer
brian.smith@exone.com
or
Kei
Advisors LLC
Deborah K. Pawlowski / Karen L. Howard
716-843-3908
/ 716-843-3942
dpawlowski@keiadvisors.com
/ khoward@keiadvisors.com
or
For
SGL:
Corporate Communications, Media Relations
+49 611
6029-100
press@sglgroup.com