Pilot contact in pug and sockets

[Marinel1]

I read a lot about CEE plugs and sockets with pilot contact ( 63A and 125A), but when it concerns rubber flexible cable to built an electric extension I can not find the cable

Please check

https://www.legrandservices.nl/documize/2012/10/20121015_58061_2.pdf

and please help me to find the right cable.