PRESS RELEASE - FOR IMMEDIATE RELEASE

Contact:
Sylvia Stromback
RotoSub AB
Datalinjen 1, SE-583 30 Linkoping, Sweden
Phone: +46 13 9913028, Fax: +46 13 9913029
PR@RotoSub.com
http://www.rotosub.com

RotoSub AB presents the world.s first Self Silencing Fan

Linkoping, Sweden - June 16 2011 - Noise pollution from fans has
always been a problem, but a solution is finally available.  The novel
RotoSub technology, RotoSub R-ANC, takes a completely new approach by
addressing the problem at its source, enabling the fan to reduce its
own noise.

RotoSub R-ANC is an active noise reduction solution that integrates
fully into the fan itself. The solution dramatically reduces its noise
without increasing the size of the fan or requiring any additional
components.

"Customers are calling for smaller more efficient low-noise fans with
a higher degree of integration freedom" said Lars Stromback, CEO of
RotoSub. "By providing an easily integrated and quieter solution, our
customers can focus more of their creativity into product design."

RotoSub AB announced today that the RotoSub R-ANC technology will be
presented in an invited paper at the INTER-NOISE 2011 Congress in
Osaka, Japan. The congress is sponsored by the International Institute
of Noise Control Engineering (I-INCE), and is co-organized by the
Institute of Noise Control Engineering of Japan (INCE/J) and the
Acoustical Society of Japan (ASJ).

In conjunction with our ongoing project with the Swedish Trade Council
in Japan meetings will be held during the Japanese tour. If you want
to schedule a meeting please contact Sylvia Stromback.  A video preview,
demonstrating the noise reduction capabilities of the technology, is
available on the RotoSub web site, at
http://www.rotosub.com/s_products_demo.php.

About RotoSub
Founded in 2004, RotoSub has established itself as a recognized
specialist in the field of fan noise reduction. Over the years,
RotoSub has built up a strong IP portfolio within the R-ANC technology
consisting of knowhow, patents and core algorithms.

Mission
"To be recognized as the number one company in the fight against fan noise."

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If you would like more information, or to schedule an interview,
please contact Sylvia Stromback at +46 13 9913028 or email Sylvia at
PR@RotoSub.com