S-1 HM™ High-Performance Glass Rovings to be Manufactured Under License in China and Targeted Towards the Wind Energy Market

March 27th, 2012 by

AIKEN, SC USA – (March 27, 2012) – AGY has announced the signing of a long-term
agreement with CTG/Taishan Fiberglass of Shandong Province, China to manufacture AGY’s new
S-1 HM™ high-performance glass rovings for wind energy turbine applications. Manufactured
under license from AGY, the rovings will be sold globally by both companies. AGY will focus on
the wind energy markets in the US and Europe, and CTG/Taishan Fiberglass will sell to the wind
energy markets in the Asia Pacific and African regions.

AGY chose to partner with CTG/Taishan Fiberglass after a review of several potential
suppliers. According to AGY President, Drew Walker, “We selected CTG/Taishan Fiberglass
because of their experience in the wind energy market as well as their technical skills to produce
an S-Series® glass fiber in the volumes and formats required by the high tech wind energy market.”
CTG/ Taishan Fiberglass is one of the world’s largest fiber glass manufacturers whose
main focus is supplying the highest quality fiber glass to its customers at the best price and with
the best service. “We are very pleased to partner with AGY,” said Mr. Zhiyao Tang, Chairman and
President of CTG/Taishan Fiberglass. “We currently supply rovings and fabrics for the large
blades used in wind generation. We will combine the new S-1 HM materials with our existing
products in our sales and marketing efforts to the growing wind energy market.”

Utilizing a proprietary glass formulation designed to maximize performance properties
while allowing for high volume and economical manufacture, the S-1 HM rovings provide
significantly higher modulus and enhanced fatigue performance versus traditional E-Glass for
wind turbine blades. “The S-1 HM rovings are the highest tensile modulus glass fiber available –
90 GPa (13,053ksi),” explained Walker. “These property improvements versus typical E-Glass
will enable manufacturers to make larger blades, which produce more energy.
Our rovings are specifically aimed at areas of the blade where high-performance glass will
allow weight to besaved and where the extra performance of S-1 HM rovings versus a traditional
E-Glass will be evident. For example, in the spar and spar caps, leading and trailing edge and blade root.”