Specialised Velcro

Clutching at straws by posting this but just hope someone can help. I have Mosquito screens built into a frame which sit on the window frame Inside the house and are held in place by Velcro, not the flimsy stuff that you find in the Chinese/haberdashery shops, these are quite thick and hooks instead of the other type just mentioned. I need to replace some through use/age! All this said does anyone know where I can buy some! Tried the Chinese and the Feretia nr the old Consum in Quesada, no joy.
Al, Quesada!
TIA

Hi,
Amazon.es have a wide selection of strong and durable velcro, stick and non stick, if you use them or have a friend that does

Julie the owner of Adios mosquitoes uses that velcro. Once it's on, it's on! She's on the Sunday market and is on Facebook. Look her up on Google and give her a call it's adios mosquitoes Costa blanca. I'm sure she'd sell you a little bit