ژئوتكستايل:

http://www.geosynthetic-institute.org/

http://www.geoace.com/e/download.php

http://www.bttechnology.com/index.html

http://www.geosystems.com/geosystems_geosynthetics.htm

http://www.ajdesigner.com/phpgeotextile/geotextile_equation_permittivity.php

http://www.landfilldesign.com/cgibin/

geofil.pl?input7=3&input1=0.01&input2=0.035&input3=0.4&input4=0.9&input5=6.5&input6=2

http://www.crtlabs.com/testing_laboratory_list.html

http://www.textiles.com.tw/hydraulic-engineering.htm

http://www.geosyntheticproducts.com/table_4.html

http://www.jwgeosynthetics.com/newEbiz1/EbizPortalFG/portal/html/GeneralContentShow.html

www.ileil.com/geotextile-testing-machines.html

ژئوممبرن:

http://www.geomembrane.com/

http://www.gti.ca/

http://www.huitex.com/huitex/HUITEX/Geomembrane_english.htm

http://www.butylproducts.co.uk/Products-Services/LiningContractor/Materials/

http://pgi-tp.cee.uiuc.edu/

ژئوفوم:

http://www.insulfoam.com/

http://www.softoria.com/institute/geofoam/index.html

http://www.geofoam.com/

http://geofoam.syr.edu/GRC_Applications.asp