Trade Shows and Exhibitions Analyzer and Planner

I appreciate the detailed information. Based on your preferences and goals, here are some trade shows and exhibitions in Western Europe that you might consider:
Neonyt (Berlin, Germany)
Time: Summer and Winter (consider attending the summer edition for a spring showcase preparation)
Details: It is the global hub for fashion, sustainability, and innovation. It offers a great platform for networking and showcasing sustainable products.
Copenhagen Fashion Summit (Copenhagen, Denmark)
Time: May
Details: Known as a vital event in sustainable fashion, it attracts a vast range of stakeholders in the fashion industry. It would be a great place to network and present your new sustainable fabric line.
Ethical Fashion Show (Paris, France)
Time: September
Details: This show is an excellent platform for sustainable and ethical fashion brands. The September timeline gives you ample preparation time for a spring event.
Milano Fashion Week (Milan, Italy)
Time: September and February
Details: Although it's a mainstream event, it has been hosting an increasing number of sustainable fashion brands. You can showcase your new fabric line alongside top sustainable fashion brands.
Remember to book a large booth space for fabric displays and to check the technology setups available at these events. Given your budget of 20,000 Euros, early booking might help in securing a favorable spot. It is also advisable to do a competitive analysis to understand what top sustainable fashion brands might be attending these events.
I hope this assists you in finding the most suitable trade show to attend. Please, let me know if there is anything else you would like to explore.