<technology-type type="building" />
<!-- Different chemicals. //-->
<technology-type type="chemicals" />
<technology-type type="building" />
<!-- Different chemicals. //-->
<technology-type type="chemicals" />
<!-- Technologies for different constructions. //-->
<technology-type type="construction" />
<!-- Different equipment technologies. //-->
<!-- Technologies for different constructions. //-->
<technology-type type="construction" />
<!-- Different equipment technologies. //-->