Perforated Metal Association

 

European Perforators Association

http://europerf.org/en/home/

This perforated metal association was founded in 1962 to represent metal perforating industry in Europe. They have members that come from 15 countries in Europe.

 

Industrial Perforators Association (IPA)

http://www.iperf.org

A lot of metal perforation resources and they also provide very usefull information about metal perforation. This association based in United State and has lot of international members.