HT in PRIME category
Agency oekom Research ranked in 2008 HT in the Prime category of companies with respect to its standards of corporate responsibility and sustainable development policy. In 2016, the category way reconfirmed.
CEERIUS Sustainability Index
In 2014, HT is the sixth consecutive year has been included in the CEERIUS Sustainability Index for 2015, the sustainability index of the Vienna Stock Exchange for the region of Central and Eastern Europe, which evaluates the leading companies in this region in terms of social and environmental quality, as and economic effect.