For many years, the name Sunda has exemplified leading
technology in the solarthermal field.
Sunda was originally founded as a joint venture
between the German company DASA and the Chinese company SUNPO. Sunda
was formed by merging outstanding engineering with cost-efficient
manufacturong. The result has been long-lasting, quality solarthermal
Through diligent research and development over
decades, the Seido series was designed. These new vacuum tubes maintain
a high performance level as well as a long life span.
With the addition of a modern production plant near Beijing, China,
Sunda now has an annual capacity of 500,000 tubes and is considered
one of the largest vacuum tube enterprises in the world.
The outstanding efficiency and reliability of the
Seido tubes have been demonstrated thousands of times in private
homes and apartment buildings on all continents.
The Seido series has also proved to be an ideal solution world-
wide for the heating and cooling of large scale plants, some of
which well exceed 2,000 tubes.
Since the year 2000, Sunda has been led solely
by its Chinese partners.
Products and manufacturing are regularly improved in cooper-
ation with research institutions. In 2001, the factory, built on
more than 8,000 square meters, was certified according to ISO 9001
All tubes fulfill the requirement of DIN 4757 and the German TÜV.
SRS Solartechnik GmbH, located in Schluechtern
near Frankfurt, distributes the products quickly
and competently to their customers.
SRS Solartechnik GmbH is a qualified partner for meeting your needs.
In addition to product distribution, SRS Solartechnik GmbH is available to answer
questions concerning project planning and product installation.